remcos | 98b668f7457089866b6364c672e8dd35b12a24899eb80fdfcfc2a5aab8d9aa5b

Analysis

max time kernel
147s
max time network
145s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
28/03/2024, 12:57

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General

Target

Specification-Glycyrrhetic Acid 3-O-Glucuronide.exe
Size

926KB
MD5

a5116c0a496d4b011dd2afc12147d1b2
SHA1

967e37264a5e0982b21b267211f9c5ccdc1662cf
SHA256

98b668f7457089866b6364c672e8dd35b12a24899eb80fdfcfc2a5aab8d9aa5b
SHA512

1d1922b3cbd0bc2e3e85ce0e787f63819a8f0a76286f58d590fecc3d5753cf78fe17ce3ecf8253117189a8f994e4b7b167aca394721bf3f1acd708f2702ffe87
SSDEEP

24576:8cKhi13lO4V99LzjUdKc7dJ3iPOgrNiFj2+:NKE1hLzjA7Z8Piz

Score

10^/10

remcos jons collection persistence rat

Malware Config

Extracted

Family

remcos

Botnet

JONS

172.245.208.13:4445

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-R7QS5C
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/852-68-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/852-83-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2744-63-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2744-77-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 6 IoCs

resource	yara_rule
behavioral1/memory/2744-63-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/852-68-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/1092-71-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1092-72-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2744-77-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/852-83-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

Executes dropped EXE 1 IoCs

pid	Process
2628	svchost.exe

Loads dropped DLL 6 IoCs

pid	Process
3048	cmd.exe
2044	WerFault.exe
2044	WerFault.exe
2044	WerFault.exe
2044	WerFault.exe
2044	WerFault.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	wmplayer.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\""	Specification-Glycyrrhetic Acid 3-O-Glucuronide.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2628 set thread context of 2444	2628	svchost.exe	35
PID 2444 set thread context of 2744	2444	wmplayer.exe	38
PID 2444 set thread context of 852	2444	wmplayer.exe	39
PID 2444 set thread context of 1092	2444	wmplayer.exe	40

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

pid	Process
2072	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2540	timeout.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1368	Specification-Glycyrrhetic Acid 3-O-Glucuronide.exe
1368	Specification-Glycyrrhetic Acid 3-O-Glucuronide.exe
2744	wmplayer.exe
2744	wmplayer.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2444	wmplayer.exe
2444	wmplayer.exe
2444	wmplayer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1368	Specification-Glycyrrhetic Acid 3-O-Glucuronide.exe
Token: SeDebugPrivilege	2628	svchost.exe
Token: SeDebugPrivilege	1092	wmplayer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2444	wmplayer.exe

Suspicious use of WriteProcessMemory 46 IoCs

description	pid	Process	procid_target
PID 1368 wrote to memory of 3004	1368	Specification-Glycyrrhetic Acid 3-O-Glucuronide.exe	28
PID 1368 wrote to memory of 3004	1368	Specification-Glycyrrhetic Acid 3-O-Glucuronide.exe	28
PID 1368 wrote to memory of 3004	1368	Specification-Glycyrrhetic Acid 3-O-Glucuronide.exe	28
PID 1368 wrote to memory of 3048	1368	Specification-Glycyrrhetic Acid 3-O-Glucuronide.exe	30
PID 1368 wrote to memory of 3048	1368	Specification-Glycyrrhetic Acid 3-O-Glucuronide.exe	30
PID 1368 wrote to memory of 3048	1368	Specification-Glycyrrhetic Acid 3-O-Glucuronide.exe	30
PID 3004 wrote to memory of 2072	3004	cmd.exe	32
PID 3004 wrote to memory of 2072	3004	cmd.exe	32
PID 3004 wrote to memory of 2072	3004	cmd.exe	32
PID 3048 wrote to memory of 2540	3048	cmd.exe	33
PID 3048 wrote to memory of 2540	3048	cmd.exe	33
PID 3048 wrote to memory of 2540	3048	cmd.exe	33
PID 3048 wrote to memory of 2628	3048	cmd.exe	34
PID 3048 wrote to memory of 2628	3048	cmd.exe	34
PID 3048 wrote to memory of 2628	3048	cmd.exe	34
PID 2628 wrote to memory of 2444	2628	svchost.exe	35
PID 2628 wrote to memory of 2444	2628	svchost.exe	35
PID 2628 wrote to memory of 2444	2628	svchost.exe	35
PID 2628 wrote to memory of 2444	2628	svchost.exe	35
PID 2628 wrote to memory of 2444	2628	svchost.exe	35
PID 2628 wrote to memory of 2444	2628	svchost.exe	35
PID 2628 wrote to memory of 2444	2628	svchost.exe	35
PID 2628 wrote to memory of 2444	2628	svchost.exe	35
PID 2628 wrote to memory of 2444	2628	svchost.exe	35
PID 2628 wrote to memory of 2444	2628	svchost.exe	35
PID 2628 wrote to memory of 2444	2628	svchost.exe	35
PID 2628 wrote to memory of 2444	2628	svchost.exe	35
PID 2628 wrote to memory of 2444	2628	svchost.exe	35
PID 2628 wrote to memory of 2044	2628	svchost.exe	36
PID 2628 wrote to memory of 2044	2628	svchost.exe	36
PID 2628 wrote to memory of 2044	2628	svchost.exe	36
PID 2444 wrote to memory of 2744	2444	wmplayer.exe	38
PID 2444 wrote to memory of 2744	2444	wmplayer.exe	38
PID 2444 wrote to memory of 2744	2444	wmplayer.exe	38
PID 2444 wrote to memory of 2744	2444	wmplayer.exe	38
PID 2444 wrote to memory of 2744	2444	wmplayer.exe	38
PID 2444 wrote to memory of 852	2444	wmplayer.exe	39
PID 2444 wrote to memory of 852	2444	wmplayer.exe	39
PID 2444 wrote to memory of 852	2444	wmplayer.exe	39
PID 2444 wrote to memory of 852	2444	wmplayer.exe	39
PID 2444 wrote to memory of 852	2444	wmplayer.exe	39
PID 2444 wrote to memory of 1092	2444	wmplayer.exe	40
PID 2444 wrote to memory of 1092	2444	wmplayer.exe	40
PID 2444 wrote to memory of 1092	2444	wmplayer.exe	40
PID 2444 wrote to memory of 1092	2444	wmplayer.exe	40
PID 2444 wrote to memory of 1092	2444	wmplayer.exe	40

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Specification-Glycyrrhetic Acid 3-O-Glucuronide.exe
"C:\Users\Admin\AppData\Local\Temp\Specification-Glycyrrhetic Acid 3-O-Glucuronide.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1368
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3004
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:2072
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp11CC.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:3048
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2540
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2628
  - - C:\Program Files (x86)\Windows Media Player\wmplayer.exe
      "C:\Program Files (x86)\Windows Media Player\wmplayer.exe"
      4⤵
      Suspicious use of SetThreadContext
      Suspicious behavior: MapViewOfSection
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2444
    - - C:\Program Files (x86)\Windows Media Player\wmplayer.exe
        
        "C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /stext "C:\Users\Admin\AppData\Local\Temp\dgitityumpbxqshsvmewsqbvs"
        5⤵
        Suspicious behavior: EnumeratesProcesses
        
        PID:2744
    - - C:\Program Files (x86)\Windows Media Player\wmplayer.exe
        
        "C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /stext "C:\Users\Admin\AppData\Local\Temp\oinmjmjoaxtcbydwmwrqdcnmbggz"
        5⤵
        Accesses Microsoft Outlook accounts
        
        PID:852
    - - C:\Program Files (x86)\Windows Media Player\wmplayer.exe
        
        "C:\Program Files (x86)\Windows Media Player\wmplayer.exe" /stext "C:\Users\Admin\AppData\Local\Temp\ycbwjeupoflhderavhdrohivcmqadil"
        5⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:1092
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2628 -s 720
      4⤵
      Loads dropped DLL
      PID:2044

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
338B

MD5
f262190b49bb70b52ccce8e67f6e2786

SHA1
2023cb1307a8529703289db0823b08217a17adde

SHA256
20ad98be9e8666c26ab49b595a5fb1435d4318070ce72df3010f63ac06ebb171

SHA512
4a29c3d1613f2a606dc66d9d6f25722c84479fe98000f1671133dd43f9ab429f8ad231c26ce624eb3453145188bcbc35376096447cf3ab3f3a00ef60f996988e

Download Submit
C:\Users\Admin\AppData\Local\Temp\dgitityumpbxqshsvmewsqbvs

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp11CC.tmp.bat

Filesize
151B

MD5
da4fe590c9d15d30cab00f1cfd47362d

SHA1
ddcf32f37b7179efb9294fc28f489058d4beff4a

SHA256
8870acb7de4886a72c96992d877aa5dc65a224c1c5e376b1714f111f448a3d5b

SHA512
31f77479e18c5986c1dfdf3f39af09cfdea57e4e4d67ffc43bd7a1bcab28725deb146c1c57a6ac7d5d1e9b05fb3442485e66ecc4257d9b1661eb5ab65b37c103

Download Submit
\Users\Admin\AppData\Roaming\svchost.exe

Filesize
926KB

MD5
a5116c0a496d4b011dd2afc12147d1b2

SHA1
967e37264a5e0982b21b267211f9c5ccdc1662cf

SHA256
98b668f7457089866b6364c672e8dd35b12a24899eb80fdfcfc2a5aab8d9aa5b

SHA512
1d1922b3cbd0bc2e3e85ce0e787f63819a8f0a76286f58d590fecc3d5753cf78fe17ce3ecf8253117189a8f994e4b7b167aca394721bf3f1acd708f2702ffe87

Download Submit
memory/852-83-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/852-57-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/852-68-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/852-64-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1092-72-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1092-71-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1092-69-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1092-65-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1368-13-0x000007FEF5040000-0x000007FEF5A2C000-memory.dmp

Filesize
9.9MB

Download
memory/1368-3-0x000000001B110000-0x000000001B1E4000-memory.dmp

Filesize
848KB

Download
memory/1368-2-0x000000001B1F0000-0x000000001B270000-memory.dmp

Filesize
512KB

Download
memory/1368-0-0x0000000000360000-0x000000000037C000-memory.dmp

Filesize
112KB

Download
memory/1368-1-0x000007FEF5040000-0x000007FEF5A2C000-memory.dmp

Filesize
9.9MB

Download
memory/2444-80-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-124-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-123-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-116-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2444-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-115-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-108-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-107-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-82-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2444-100-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-88-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2444-87-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2444-89-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-99-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2444-91-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2444-94-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2628-93-0x000000001B160000-0x000000001B1E0000-memory.dmp

Filesize
512KB

Download
memory/2628-18-0x0000000000B20000-0x0000000000B3C000-memory.dmp

Filesize
112KB

Download
memory/2628-90-0x000007FEF4650000-0x000007FEF503C000-memory.dmp

Filesize
9.9MB

Download
memory/2628-19-0x000007FEF4650000-0x000007FEF503C000-memory.dmp

Filesize
9.9MB

Download
memory/2628-20-0x000000001B160000-0x000000001B1E0000-memory.dmp

Filesize
512KB

Download
memory/2744-77-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2744-63-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2744-61-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2744-54-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2744-52-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download