darkcomet | 4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c

Analysis

max time kernel
135s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
07/11/2022, 16:03

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General

Target

4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Size

330KB
MD5

170a9310f4fee2a3344beaa63a0bd3d1
SHA1

435eb06cf036329dbc3e310fb3e9629c6c68f8e7
SHA256

4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c
SHA512

4d3e89935a7a6bfd061d176d40f54d7b8f46e5dab0ecd59f1d9291eaea3f8882acad326aa8e6e6bbaa1ce9a3b827f2d2d349e435ee75ce7c1fc82e2a9697fa5c
SSDEEP

6144:ojFy93LU92VxOtVflFud4TnxcpPTASCmqMorHwMYoSG:oFy9bPQZlFjrG0ZmYbw1oS

Score

10^/10

darkcomet kelly persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Kelly

90.34.201.154:1604

Mutex

DCMIN_MUTEX-MY3VXBN

Attributes

InstallPath
DCSCMIN\IMDCSC.exe
gencode
aAPjs3ZWKKtp
install
true
offline_keylogger
true
persistence
false
reg_key
DarkComet RAT

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\DCSCMIN\\IMDCSC.exe"	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe

Executes dropped EXE 1 IoCs

pid	Process
4100	IMDCSC.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4040-132-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/files/0x0006000000022f48-134.dat	upx
behavioral2/files/0x0006000000022f48-135.dat	upx
behavioral2/memory/4100-136-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral2/memory/4040-137-0x0000000000400000-0x00000000004E8000-memory.dmp	upx

Checks computer location settings 2 TTPs 1 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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\DarkComet RAT = "C:\\Users\\Admin\\AppData\\Local\\Temp\\DCSCMIN\\IMDCSC.exe"	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeSecurityPrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeTakeOwnershipPrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeLoadDriverPrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeSystemProfilePrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeSystemtimePrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeProfSingleProcessPrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeIncBasePriorityPrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeCreatePagefilePrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeBackupPrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeRestorePrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeShutdownPrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeDebugPrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeSystemEnvironmentPrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeChangeNotifyPrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeRemoteShutdownPrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeUndockPrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeManageVolumePrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeImpersonatePrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeCreateGlobalPrivilege	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: 33	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: 34	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: 35	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: 36	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
Token: SeIncreaseQuotaPrivilege	4100	IMDCSC.exe
Token: SeSecurityPrivilege	4100	IMDCSC.exe
Token: SeTakeOwnershipPrivilege	4100	IMDCSC.exe
Token: SeLoadDriverPrivilege	4100	IMDCSC.exe
Token: SeSystemProfilePrivilege	4100	IMDCSC.exe
Token: SeSystemtimePrivilege	4100	IMDCSC.exe
Token: SeProfSingleProcessPrivilege	4100	IMDCSC.exe
Token: SeIncBasePriorityPrivilege	4100	IMDCSC.exe
Token: SeCreatePagefilePrivilege	4100	IMDCSC.exe
Token: SeBackupPrivilege	4100	IMDCSC.exe
Token: SeRestorePrivilege	4100	IMDCSC.exe
Token: SeShutdownPrivilege	4100	IMDCSC.exe
Token: SeDebugPrivilege	4100	IMDCSC.exe
Token: SeSystemEnvironmentPrivilege	4100	IMDCSC.exe
Token: SeChangeNotifyPrivilege	4100	IMDCSC.exe
Token: SeRemoteShutdownPrivilege	4100	IMDCSC.exe
Token: SeUndockPrivilege	4100	IMDCSC.exe
Token: SeManageVolumePrivilege	4100	IMDCSC.exe
Token: SeImpersonatePrivilege	4100	IMDCSC.exe
Token: SeCreateGlobalPrivilege	4100	IMDCSC.exe
Token: 33	4100	IMDCSC.exe
Token: 34	4100	IMDCSC.exe
Token: 35	4100	IMDCSC.exe
Token: 36	4100	IMDCSC.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4100	IMDCSC.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4040 wrote to memory of 4100	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe	79
PID 4040 wrote to memory of 4100	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe	79
PID 4040 wrote to memory of 4100	4040	4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe	79

C:\Users\Admin\AppData\Local\Temp\4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe
"C:\Users\Admin\AppData\Local\Temp\4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4040
- C:\Users\Admin\AppData\Local\Temp\DCSCMIN\IMDCSC.exe
  "C:\Users\Admin\AppData\Local\Temp\DCSCMIN\IMDCSC.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4100

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\DCSCMIN\IMDCSC.exe

Filesize
330KB

MD5
170a9310f4fee2a3344beaa63a0bd3d1

SHA1
435eb06cf036329dbc3e310fb3e9629c6c68f8e7

SHA256
4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c

SHA512
4d3e89935a7a6bfd061d176d40f54d7b8f46e5dab0ecd59f1d9291eaea3f8882acad326aa8e6e6bbaa1ce9a3b827f2d2d349e435ee75ce7c1fc82e2a9697fa5c

Download Submit
C:\Users\Admin\AppData\Local\Temp\DCSCMIN\IMDCSC.exe

Filesize
330KB

MD5
170a9310f4fee2a3344beaa63a0bd3d1

SHA1
435eb06cf036329dbc3e310fb3e9629c6c68f8e7

SHA256
4c44568cc7590269d3407c0bd61bb44fe4f0d0873e08ac82e0dc4c7163f48c2c

SHA512
4d3e89935a7a6bfd061d176d40f54d7b8f46e5dab0ecd59f1d9291eaea3f8882acad326aa8e6e6bbaa1ce9a3b827f2d2d349e435ee75ce7c1fc82e2a9697fa5c

Download Submit
memory/4040-132-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/4040-137-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download
memory/4100-136-0x0000000000400000-0x00000000004E8000-memory.dmp

Filesize
928KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads