remcos | a47783e77972a2cd6711b618b3dd3a57544e6c225e37d44961e967b2530e63da

General

Target

b9df9c09f708b886eee75c536d7e002a.exe
Size

1.4MB
MD5

b9df9c09f708b886eee75c536d7e002a
SHA1

f47797d0b3ed574db1ae1a3c7820cfeee6d21d3f
SHA256

a47783e77972a2cd6711b618b3dd3a57544e6c225e37d44961e967b2530e63da
SHA512

156c61f2a7d9108b42491d5a2d457be36913faff6ac23044372120e481beb32c08a4c4f121067b2b58f0485649ddd8f396f2fdc89db30c4772222adb2b6c6a86
SSDEEP

24576:n6yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6ER:6Y9UORVOM1jJHzaiape0hsABFRJch6Ll

Score

10^/10

remcos graced rat rezer0 upx

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

GRACED

C2

thankyoulord.ddns.net:5050

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-0S5XD9
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
take_screenshot_title
wikipedia;solitaire;

Signatures

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

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1936-9-0x0000000000C00000-0x0000000000C2C000-memory.dmp	rezer0

Executes dropped EXE 1 IoCs

Processes:

test.exe

pid process

1936 test.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

2872 cmd.exe

pid	process
1936	test.exe

pid	process
2872	cmd.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/2432-1-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral1/memory/2432-30-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral1/memory/2432-32-0x0000000000400000-0x00000000006F1000-memory.dmp	upx

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Suspicious use of SetThreadContext 1 IoCs

Processes:

test.exe

description pid process target process

PID 1936 set thread context of 2756 1936 test.exe vbc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

2360 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

test.exe

pid process

1936 test.exe
1936 test.exe
1936 test.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

test.exe

description pid process

Token: SeDebugPrivilege 1936 test.exe

description	pid	process	target process
PID 1936 set thread context of 2756	1936	test.exe	vbc.exe

pid	process
2360	schtasks.exe

pid	process
1936	test.exe
1936	test.exe
1936	test.exe

description	pid	process
Token: SeDebugPrivilege	1936	test.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

b9df9c09f708b886eee75c536d7e002a.execmd.exetest.exe

description	pid	process	target process
PID 2432 wrote to memory of 2872	2432	b9df9c09f708b886eee75c536d7e002a.exe	cmd.exe
PID 2432 wrote to memory of 2872	2432	b9df9c09f708b886eee75c536d7e002a.exe	cmd.exe
PID 2432 wrote to memory of 2872	2432	b9df9c09f708b886eee75c536d7e002a.exe	cmd.exe
PID 2432 wrote to memory of 2872	2432	b9df9c09f708b886eee75c536d7e002a.exe	cmd.exe
PID 2872 wrote to memory of 1936	2872	cmd.exe	test.exe
PID 2872 wrote to memory of 1936	2872	cmd.exe	test.exe
PID 2872 wrote to memory of 1936	2872	cmd.exe	test.exe
PID 2872 wrote to memory of 1936	2872	cmd.exe	test.exe
PID 1936 wrote to memory of 2360	1936	test.exe	schtasks.exe
PID 1936 wrote to memory of 2360	1936	test.exe	schtasks.exe
PID 1936 wrote to memory of 2360	1936	test.exe	schtasks.exe
PID 1936 wrote to memory of 2360	1936	test.exe	schtasks.exe
PID 1936 wrote to memory of 2640	1936	test.exe	vbc.exe
PID 1936 wrote to memory of 2640	1936	test.exe	vbc.exe
PID 1936 wrote to memory of 2640	1936	test.exe	vbc.exe
PID 1936 wrote to memory of 2640	1936	test.exe	vbc.exe
PID 1936 wrote to memory of 2756	1936	test.exe	vbc.exe
PID 1936 wrote to memory of 2756	1936	test.exe	vbc.exe
PID 1936 wrote to memory of 2756	1936	test.exe	vbc.exe
PID 1936 wrote to memory of 2756	1936	test.exe	vbc.exe
PID 1936 wrote to memory of 2756	1936	test.exe	vbc.exe
PID 1936 wrote to memory of 2756	1936	test.exe	vbc.exe
PID 1936 wrote to memory of 2756	1936	test.exe	vbc.exe
PID 1936 wrote to memory of 2756	1936	test.exe	vbc.exe
PID 1936 wrote to memory of 2756	1936	test.exe	vbc.exe
PID 1936 wrote to memory of 2756	1936	test.exe	vbc.exe
PID 1936 wrote to memory of 2756	1936	test.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\b9df9c09f708b886eee75c536d7e002a.exe
"C:\Users\Admin\AppData\Local\Temp\b9df9c09f708b886eee75c536d7e002a.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2432

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c test.exe
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2872

C:\Users\Admin\AppData\Local\Temp\test.exe
test.exe
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1936

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXAlJeWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2D28.tmp"
4⤵
- Creates scheduled task(s)
PID:2360

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2640

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2756

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scripting

1

T1064

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Scripting

1

T1064

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\test.exe
Filesize
330KB

MD5
261aa73f93c90dcec0c36a51cb9b5dee

SHA1
b0c41e06cd2ded81706820423db40bf8fea2c957

SHA256
ae160b749914bd56aecbcf43d56a59bde2069a145682b2911fe50c6adabe1b54

SHA512
7b90335b4a7db7b5056f6d60db642754038dc544bd2c1f82e68b1f8e339bf70227f0c08d157b4ca1004448fab7d109f0239196f242d0edeab978de9025a3c0ed

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp2D28.tmp
Filesize
1KB

MD5
4697be186039e4fc6b23264261be89d9

SHA1
a0f9114a984ff332f7ad8188dde196a1ab277d87

SHA256
9358516b6767bfe3f81ac48b5c10609afdcb3bc0e4d6ffd4dc747702dbbe38e9

SHA512
db034e7258e0b0760cafec5a36b5582d8ab02316df8d4e4568e59d717ced6359d6a88e0074e134c9e457d9f88fb77c75bd049da34015fee00fd52696428087db

Download Submit
memory/1936-5-0x0000000000C50000-0x0000000000CA8000-memory.dmp

Filesize
352KB

Download
memory/1936-6-0x00000000743E0000-0x0000000074ACE000-memory.dmp

Filesize
6.9MB

Download
memory/1936-7-0x0000000004CE0000-0x0000000004D20000-memory.dmp

Filesize
256KB

Download
memory/1936-8-0x0000000000560000-0x0000000000568000-memory.dmp

Filesize
32KB

Download
memory/1936-9-0x0000000000C00000-0x0000000000C2C000-memory.dmp

Filesize
176KB

Download
memory/1936-29-0x00000000743E0000-0x0000000074ACE000-memory.dmp

Filesize
6.9MB

Download
memory/2432-30-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2432-32-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2432-1-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2756-17-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-35-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-23-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-24-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2756-25-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-27-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-28-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-31-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-19-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-15-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-33-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-34-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-22-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-36-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-38-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-40-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-42-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-44-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-46-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-48-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-50-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-52-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-54-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2756-56-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads