darkcomet | 9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b

Analysis

max time kernel
231s
max time network
218s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
06/12/2022, 14:48

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General

Target

9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Size

1.3MB
MD5

4e2a96f31aee26f5b857856399c13d06
SHA1

5184d1f42712dec5380dabd325549210e5437253
SHA256

9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b
SHA512

187dc02fc0c9c9090f52921f9ad8f478427b4c40c0eaee680f1e4aba04fd3dc677e06651e005b998c2a1f32bef9b052483e6e017185ffa00060160ebc1830dd9
SSDEEP

24576:ORmJkcoQricOIQxiZY1iaBA0dAQdtvGw6E8jN4vAgDbI4G8ELRGY0+jz:bJZoQrbTFZY1iaBA4AQAE82ZG50Oz

Score

10^/10

darkcomet guest16_min persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16_min

enviousegend.no-ip.biz:5555

Mutex

DCMIN_MUTEX-5PYNPYR

Attributes

InstallPath
DCSCMIN\IMDCSC.exe
gencode
oTBrCPsCRkpP
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\\Documents\\DCSCMIN\\IMDCSC.exe"	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe

Executes dropped EXE 2 IoCs

pid	Process
1476	IMDCSC.exe
532	IMDCSC.exe

Loads dropped DLL 1 IoCs

pid	Process
1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.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-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\DarkComet RAT = "C:\\Users\\Admin\\Documents\\DCSCMIN\\IMDCSC.exe"	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe

AutoIT Executable 4 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0009000000012324-63.dat	autoit_exe
behavioral1/files/0x0009000000012324-65.dat	autoit_exe
behavioral1/files/0x0009000000012324-67.dat	autoit_exe
behavioral1/files/0x0009000000012324-73.dat	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 560 set thread context of 1688	560	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe	28
PID 1476 set thread context of 532	1476	IMDCSC.exe	30

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
560	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
1476	IMDCSC.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeSecurityPrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeTakeOwnershipPrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeLoadDriverPrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeSystemProfilePrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeSystemtimePrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeProfSingleProcessPrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeIncBasePriorityPrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeCreatePagefilePrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeBackupPrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeRestorePrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeShutdownPrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeDebugPrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeSystemEnvironmentPrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeChangeNotifyPrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeRemoteShutdownPrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeUndockPrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeManageVolumePrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeImpersonatePrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeCreateGlobalPrivilege	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: 33	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: 34	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: 35	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
Token: SeIncreaseQuotaPrivilege	532	IMDCSC.exe
Token: SeSecurityPrivilege	532	IMDCSC.exe
Token: SeTakeOwnershipPrivilege	532	IMDCSC.exe
Token: SeLoadDriverPrivilege	532	IMDCSC.exe
Token: SeSystemProfilePrivilege	532	IMDCSC.exe
Token: SeSystemtimePrivilege	532	IMDCSC.exe
Token: SeProfSingleProcessPrivilege	532	IMDCSC.exe
Token: SeIncBasePriorityPrivilege	532	IMDCSC.exe
Token: SeCreatePagefilePrivilege	532	IMDCSC.exe
Token: SeBackupPrivilege	532	IMDCSC.exe
Token: SeRestorePrivilege	532	IMDCSC.exe
Token: SeShutdownPrivilege	532	IMDCSC.exe
Token: SeDebugPrivilege	532	IMDCSC.exe
Token: SeSystemEnvironmentPrivilege	532	IMDCSC.exe
Token: SeChangeNotifyPrivilege	532	IMDCSC.exe
Token: SeRemoteShutdownPrivilege	532	IMDCSC.exe
Token: SeUndockPrivilege	532	IMDCSC.exe
Token: SeManageVolumePrivilege	532	IMDCSC.exe
Token: SeImpersonatePrivilege	532	IMDCSC.exe
Token: SeCreateGlobalPrivilege	532	IMDCSC.exe
Token: 33	532	IMDCSC.exe
Token: 34	532	IMDCSC.exe
Token: 35	532	IMDCSC.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
532	IMDCSC.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 560 wrote to memory of 1688	560	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe	28
PID 560 wrote to memory of 1688	560	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe	28
PID 560 wrote to memory of 1688	560	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe	28
PID 560 wrote to memory of 1688	560	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe	28
PID 560 wrote to memory of 1688	560	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe	28
PID 560 wrote to memory of 1688	560	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe	28
PID 1688 wrote to memory of 1476	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe	29
PID 1688 wrote to memory of 1476	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe	29
PID 1688 wrote to memory of 1476	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe	29
PID 1688 wrote to memory of 1476	1688	9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe	29
PID 1476 wrote to memory of 532	1476	IMDCSC.exe	30
PID 1476 wrote to memory of 532	1476	IMDCSC.exe	30
PID 1476 wrote to memory of 532	1476	IMDCSC.exe	30
PID 1476 wrote to memory of 532	1476	IMDCSC.exe	30
PID 1476 wrote to memory of 532	1476	IMDCSC.exe	30
PID 1476 wrote to memory of 532	1476	IMDCSC.exe	30

C:\Users\Admin\AppData\Local\Temp\9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
"C:\Users\Admin\AppData\Local\Temp\9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:560
- C:\Users\Admin\AppData\Local\Temp\9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe
  "C:\Users\Admin\AppData\Local\Temp\9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1688
- - C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe
    "C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1476
  - - C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe
      "C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:532

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\m604561.rcf

Filesize
658KB

MD5
b5717a8ed3ef57d5c0bb9ec0fab7ec8b

SHA1
839aa036575e34775fe53e295f5c11fb58bfa0c2

SHA256
4f00fa652c24d6c882cc264970baa5d7a94d5fa61cf91411d1b0b2d3e4ca1bcf

SHA512
84d52fe8f1c4d2c93972985e2f2a73c953a4bda704ce0f78eb751ce8a8e5d94a91311123ba27396a6031f4c0dbf87201581390aaa32c9e3aa66beab4a1f99771

Download Submit
C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe

Filesize
1.3MB

MD5
4e2a96f31aee26f5b857856399c13d06

SHA1
5184d1f42712dec5380dabd325549210e5437253

SHA256
9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b

SHA512
187dc02fc0c9c9090f52921f9ad8f478427b4c40c0eaee680f1e4aba04fd3dc677e06651e005b998c2a1f32bef9b052483e6e017185ffa00060160ebc1830dd9

Download Submit
C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe

Filesize
1.3MB

MD5
4e2a96f31aee26f5b857856399c13d06

SHA1
5184d1f42712dec5380dabd325549210e5437253

SHA256
9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b

SHA512
187dc02fc0c9c9090f52921f9ad8f478427b4c40c0eaee680f1e4aba04fd3dc677e06651e005b998c2a1f32bef9b052483e6e017185ffa00060160ebc1830dd9

Download Submit
C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe

Filesize
1.3MB

MD5
4e2a96f31aee26f5b857856399c13d06

SHA1
5184d1f42712dec5380dabd325549210e5437253

SHA256
9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b

SHA512
187dc02fc0c9c9090f52921f9ad8f478427b4c40c0eaee680f1e4aba04fd3dc677e06651e005b998c2a1f32bef9b052483e6e017185ffa00060160ebc1830dd9

Download Submit
\Users\Admin\Documents\DCSCMIN\IMDCSC.exe

Filesize
1.3MB

MD5
4e2a96f31aee26f5b857856399c13d06

SHA1
5184d1f42712dec5380dabd325549210e5437253

SHA256
9bc3f3a234bffb6b87c67cddec0fbff666a9ef7b22eeef3b97b57cd8a2b21e1b

SHA512
187dc02fc0c9c9090f52921f9ad8f478427b4c40c0eaee680f1e4aba04fd3dc677e06651e005b998c2a1f32bef9b052483e6e017185ffa00060160ebc1830dd9

Download Submit
memory/532-78-0x00000000000C0000-0x0000000000172000-memory.dmp

Filesize
712KB

Download
memory/532-77-0x00000000000C0000-0x0000000000172000-memory.dmp

Filesize
712KB

Download
memory/532-76-0x00000000000C0000-0x0000000000172000-memory.dmp

Filesize
712KB

Download
memory/560-54-0x00000000757E1000-0x00000000757E3000-memory.dmp

Filesize
8KB

Download
memory/1688-62-0x00000000000C0000-0x0000000000172000-memory.dmp

Filesize
712KB

Download
memory/1688-61-0x00000000000C0000-0x0000000000172000-memory.dmp

Filesize
712KB

Download
memory/1688-59-0x00000000000C0000-0x0000000000172000-memory.dmp

Filesize
712KB

Download
memory/1688-57-0x00000000000C0000-0x0000000000172000-memory.dmp

Filesize
712KB

Download
memory/1688-55-0x00000000000C0000-0x0000000000172000-memory.dmp

Filesize
712KB

Download