remcos | 9881a8d573a9a6c588e52c8588aeff09ac288ac206fc2baf00f63e4af4db7295

Analysis

max time kernel
76s
max time network
165s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
23-03-2023 17:44

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General

Target

DOCX_F0067193508.exe
Size

1024.0MB
MD5

932f4060cc31b4dbaffa1bb6d3991c20
SHA1

989f4fb91c3a30a0789c0d61c1b8c5dad659747e
SHA256

a40084ddc1d6655c2f78365a9ef6a9b81997cfa98a6f81c8d7dfe9619ef6b853
SHA512

7bb952847d5bacff9275415ba02a6fbeb180d16b2ef23591a60f9fe302f51301d7c967af5eaa5dc9135ceb108cdf25afdf745a3875b5b0655924452d1f753ba5
SSDEEP

6144:AxjCbYJafbpsBSM/HVFku/7AGLr5lw2H3SgoXraFjvVpQ+QW8uR3OoJWwvTTZlIY:+PozpsBzkuHPgDsvELuv7ZlIgCjIDF

Score

10^/10

remcos billete rat

Malware Config

Extracted

Family

remcos

Botnet

BILLETE

cactus.con-ip.com:7770

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-9927QM
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	DOCX_F0067193508.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	AppData.exe

Executes dropped EXE 1 IoCs

pid	Process
2792	AppData.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2496 set thread context of 2540	2496	DOCX_F0067193508.exe	97
PID 2792 set thread context of 5076	2792	AppData.exe	110

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
2292	schtasks.exe
3300	schtasks.exe
3400	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2900	powershell.exe
2900	powershell.exe
2728	powershell.exe
2728	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2900	powershell.exe
Token: SeDebugPrivilege	2728	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2540	csc.exe

Suspicious use of WriteProcessMemory 48 IoCs

description	pid	Process	procid_target
PID 2496 wrote to memory of 5000	2496	DOCX_F0067193508.exe	90
PID 2496 wrote to memory of 5000	2496	DOCX_F0067193508.exe	90
PID 2496 wrote to memory of 5000	2496	DOCX_F0067193508.exe	90
PID 2496 wrote to memory of 2916	2496	DOCX_F0067193508.exe	92
PID 2496 wrote to memory of 2916	2496	DOCX_F0067193508.exe	92
PID 2496 wrote to memory of 2916	2496	DOCX_F0067193508.exe	92
PID 5000 wrote to memory of 2292	5000	cmd.exe	94
PID 5000 wrote to memory of 2292	5000	cmd.exe	94
PID 5000 wrote to memory of 2292	5000	cmd.exe	94
PID 2496 wrote to memory of 2900	2496	DOCX_F0067193508.exe	95
PID 2496 wrote to memory of 2900	2496	DOCX_F0067193508.exe	95
PID 2496 wrote to memory of 2900	2496	DOCX_F0067193508.exe	95
PID 2496 wrote to memory of 2540	2496	DOCX_F0067193508.exe	97
PID 2496 wrote to memory of 2540	2496	DOCX_F0067193508.exe	97
PID 2496 wrote to memory of 2540	2496	DOCX_F0067193508.exe	97
PID 2496 wrote to memory of 2540	2496	DOCX_F0067193508.exe	97
PID 2496 wrote to memory of 2540	2496	DOCX_F0067193508.exe	97
PID 2496 wrote to memory of 2540	2496	DOCX_F0067193508.exe	97
PID 2496 wrote to memory of 2540	2496	DOCX_F0067193508.exe	97
PID 2496 wrote to memory of 2540	2496	DOCX_F0067193508.exe	97
PID 2496 wrote to memory of 2540	2496	DOCX_F0067193508.exe	97
PID 2496 wrote to memory of 2540	2496	DOCX_F0067193508.exe	97
PID 2496 wrote to memory of 2540	2496	DOCX_F0067193508.exe	97
PID 2496 wrote to memory of 2540	2496	DOCX_F0067193508.exe	97
PID 2792 wrote to memory of 3340	2792	AppData.exe	104
PID 2792 wrote to memory of 3340	2792	AppData.exe	104
PID 2792 wrote to memory of 3340	2792	AppData.exe	104
PID 2792 wrote to memory of 904	2792	AppData.exe	107
PID 2792 wrote to memory of 904	2792	AppData.exe	107
PID 2792 wrote to memory of 904	2792	AppData.exe	107
PID 2792 wrote to memory of 2728	2792	AppData.exe	108
PID 2792 wrote to memory of 2728	2792	AppData.exe	108
PID 2792 wrote to memory of 2728	2792	AppData.exe	108
PID 2792 wrote to memory of 5076	2792	AppData.exe	110
PID 2792 wrote to memory of 5076	2792	AppData.exe	110
PID 2792 wrote to memory of 5076	2792	AppData.exe	110
PID 2792 wrote to memory of 5076	2792	AppData.exe	110
PID 2792 wrote to memory of 5076	2792	AppData.exe	110
PID 2792 wrote to memory of 5076	2792	AppData.exe	110
PID 2792 wrote to memory of 5076	2792	AppData.exe	110
PID 2792 wrote to memory of 5076	2792	AppData.exe	110
PID 2792 wrote to memory of 5076	2792	AppData.exe	110
PID 2792 wrote to memory of 5076	2792	AppData.exe	110
PID 2792 wrote to memory of 5076	2792	AppData.exe	110
PID 2792 wrote to memory of 5076	2792	AppData.exe	110
PID 3340 wrote to memory of 3300	3340	cmd.exe	111
PID 3340 wrote to memory of 3300	3340	cmd.exe	111
PID 3340 wrote to memory of 3300	3340	cmd.exe	111

C:\Users\Admin\AppData\Local\Temp\DOCX_F0067193508.exe
"C:\Users\Admin\AppData\Local\Temp\DOCX_F0067193508.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2496
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafdfnasia" /tr "'C:\Users\Admin\AppData\Roaming\AppData.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5000
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafdfnasia" /tr "'C:\Users\Admin\AppData\Roaming\AppData.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:2292
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\DOCX_F0067193508.exe" "C:\Users\Admin\AppData\Roaming\AppData.exe"
  2⤵
  PID:2916
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath "'C:\Users\Admin\AppData\Local\Temp\DOCX_F0067193508.exe'"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2900
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:2540

C:\Users\Admin\AppData\Roaming\AppData.exe
C:\Users\Admin\AppData\Roaming\AppData.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2792
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafdfnasia" /tr "'C:\Users\Admin\AppData\Roaming\AppData.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3340
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafdfnasia" /tr "'C:\Users\Admin\AppData\Roaming\AppData.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:3300
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Roaming\AppData.exe" "C:\Users\Admin\AppData\Roaming\AppData.exe"
  2⤵
  PID:904
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath "'C:\Users\Admin\AppData\Roaming\AppData.exe'"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2728
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  PID:5076

C:\Users\Admin\AppData\Roaming\AppData.exe
C:\Users\Admin\AppData\Roaming\AppData.exe
1⤵
PID:4420
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Roaming\AppData.exe" "C:\Users\Admin\AppData\Roaming\AppData.exe"
  2⤵
  PID:2572
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafdfnasia" /tr "'C:\Users\Admin\AppData\Roaming\AppData.exe'" /f
  2⤵
  PID:996
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafdfnasia" /tr "'C:\Users\Admin\AppData\Roaming\AppData.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:3400
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -inputformat none -outputformat none -NonInteractive -Command Add-MpPreference -ExclusionPath "'C:\Users\Admin\AppData\Roaming\AppData.exe'"
  2⤵
  PID:4104
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  PID:4364

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
0064be61d972df61f4f0c0006ea59af9

SHA1
59789a9f0959efa5c3777f7fcd0142fc6a1caab3

SHA256
102e869b1bb154fec6e31713ee71d18e4c3e9af6964dda12c6d0465af07b7905

SHA512
fa7caca4dddf24d44b9ce525dd0be2513b702f22ba61d5d1d021cb1adcc5809658515a44697538c2cd133fa54fd803c38617c2d9b6c0abad99b9ff28b07c6fa1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\AppData.exe.log

Filesize
520B

MD5
03febbff58da1d3318c31657d89c8542

SHA1
c9e017bd9d0a4fe533795b227c855935d86c2092

SHA256
5164770a37b199a79ccd23b399bb3309228973d9f74c589bc2623dc613b37ac4

SHA512
3750c372bbca1892e9c1b34681d592c693e725a8b149c3d6938079cd467628cec42c4293b0d886b57a786abf45f5e7229247b3445001774e3e793ff5a3accfa3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
16KB

MD5
4b333e9cca3b8b16e2206fc271c6bea2

SHA1
6dc75f6608df8be67d2a86db4c8f12cc49dd4fca

SHA256
6e59ec05607e2b34b68c1c037c627d2119b2d26190a661cff396e8dbd44575cf

SHA512
c827bf2a1b3192a6e172168f8eca9ebabadee92d6f3c761fd0cc65a5843fff2b39ad9a440e8421c7897a9bf63ecdb1054b5403a4ed0636f81ff0c54aed232c99

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
16KB

MD5
ce8bba31432b91d1c0f8b42a3ab1a6a7

SHA1
e51900e65c7e572853cc492bc2f8e88a4288096a

SHA256
5b72f2e4f57331a7c53b7a80df2d7d5622a7dcdfd480c51afd7f8bf17f99386a

SHA512
5b34650b2e7c47176fafc25ecce1f7df400dbab39659cd8c0766a26526ff094a1dbd998deeded78e1e67b242ddee62f4391870238c3fe9e670bb42f14e594c33

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_r5f23xfe.qdh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\AppData.exe

Filesize
641.9MB

MD5
7ffedb8dfca19a081bd6441f03527eed

SHA1
0fa8bd9e33f496fe7764463d41e7d85d98464ec9

SHA256
7e7ba5a4795c063d4400c2ec25667cb108073277047771f3383565577c684564

SHA512
869b8440c195b1e8b463b1282ebbdf4aee11f0e5a771ab27230bdfacda5a1626f908578dfdc8fd8359249a8674a02b52690ecb1b81862f6ac7ffb98ab584cc16

Download Submit
C:\Users\Admin\AppData\Roaming\AppData.exe

Filesize
714.7MB

MD5
e6dd1650307aa151a1ca60a9c545699d

SHA1
f28e82ace3501ef2aa207fb82a1f45309e740e26

SHA256
e53f1c8d75989376361faffb74af511ca1876de74836aa04b7db22ef578976cc

SHA512
2e3e2db6f440369be6bcc975504ebbcf7f2bd28ecdabad980d3b08831241c85d0acded68c69d304f858890503957af608261af4a177036dbf1c4f8317799b001

Download Submit
C:\Users\Admin\AppData\Roaming\AppData.exe

Filesize
214.2MB

MD5
e9bd27793634dddd10c8c5d858f52760

SHA1
bea33240a875a215cda8490363f229a700118fbe

SHA256
3cd7d064d72da75fdd2c473211e64c28da9640e8fce08a7fa1d9b300c9bb692b

SHA512
a65a6d656357a724db4ea42a4921e595a07edfa577dac1e4c0f0098690225f846869cc5063759ea8e2121d2784393942f1538e8cfde0be1098e08d2072f26da6

Download Submit
memory/2496-134-0x0000000005200000-0x00000000057A4000-memory.dmp

Filesize
5.6MB

Download
memory/2496-133-0x00000000001D0000-0x0000000000302000-memory.dmp

Filesize
1.2MB

Download
memory/2540-280-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2540-282-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2540-197-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2540-143-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2540-141-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2540-246-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2540-162-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2540-163-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2540-164-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2540-165-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2540-168-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2540-245-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2540-193-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2540-198-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2540-136-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2540-225-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2540-140-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2540-138-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2540-146-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2728-222-0x00000000032A0000-0x00000000032B0000-memory.dmp

Filesize
64KB

Download
memory/2728-223-0x00000000032A0000-0x00000000032B0000-memory.dmp

Filesize
64KB

Download
memory/2728-228-0x00000000756F0000-0x000000007573C000-memory.dmp

Filesize
304KB

Download
memory/2728-238-0x00000000032A0000-0x00000000032B0000-memory.dmp

Filesize
64KB

Download
memory/2728-239-0x000000007F5B0000-0x000000007F5C0000-memory.dmp

Filesize
64KB

Download
memory/2728-284-0x000000007F5B0000-0x000000007F5C0000-memory.dmp

Filesize
64KB

Download
memory/2900-154-0x0000000006150000-0x00000000061B6000-memory.dmp

Filesize
408KB

Download
memory/2900-171-0x0000000070650000-0x000000007069C000-memory.dmp

Filesize
304KB

Download
memory/2900-188-0x0000000007DD0000-0x0000000007DEA000-memory.dmp

Filesize
104KB

Download
memory/2900-187-0x0000000007CD0000-0x0000000007CDE000-memory.dmp

Filesize
56KB

Download
memory/2900-135-0x00000000051F0000-0x0000000005226000-memory.dmp

Filesize
216KB

Download
memory/2900-139-0x0000000005940000-0x0000000005F68000-memory.dmp

Filesize
6.2MB

Download
memory/2900-144-0x0000000005300000-0x0000000005310000-memory.dmp

Filesize
64KB

Download
memory/2900-186-0x0000000007D10000-0x0000000007DA6000-memory.dmp

Filesize
600KB

Download
memory/2900-185-0x0000000007B20000-0x0000000007B2A000-memory.dmp

Filesize
40KB

Download
memory/2900-184-0x000000007F7A0000-0x000000007F7B0000-memory.dmp

Filesize
64KB

Download
memory/2900-183-0x00000000077E0000-0x00000000077FA000-memory.dmp

Filesize
104KB

Download
memory/2900-182-0x0000000008160000-0x00000000087DA000-memory.dmp

Filesize
6.5MB

Download
memory/2900-181-0x0000000006D40000-0x0000000006D5E000-memory.dmp

Filesize
120KB

Download
memory/2900-189-0x0000000007DC0000-0x0000000007DC8000-memory.dmp

Filesize
32KB

Download
memory/2900-170-0x0000000007750000-0x0000000007782000-memory.dmp

Filesize
200KB

Download
memory/2900-169-0x0000000005300000-0x0000000005310000-memory.dmp

Filesize
64KB

Download
memory/2900-159-0x00000000067B0000-0x00000000067CE000-memory.dmp

Filesize
120KB

Download
memory/2900-148-0x00000000060E0000-0x0000000006146000-memory.dmp

Filesize
408KB

Download
memory/2900-147-0x00000000057D0000-0x00000000057F2000-memory.dmp

Filesize
136KB

Download
memory/2900-145-0x0000000005300000-0x0000000005310000-memory.dmp

Filesize
64KB

Download
memory/4104-267-0x0000000072740000-0x000000007278C000-memory.dmp

Filesize
304KB

Download
memory/4104-277-0x0000000005440000-0x0000000005450000-memory.dmp

Filesize
64KB

Download
memory/4364-256-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4364-254-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/4364-255-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/5076-211-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

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memory/5076-210-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/5076-209-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

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