darkcomet | 9079c18a43d9c576c2f4ed584358db68bbbf3c390fb6612df4120fc05966970d

Analysis

max time kernel
142s
max time network
140s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
01-11-2024 14:50

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General

Target

9079c18a43d9c576c2f4ed584358db68bbbf3c390fb6612df4120fc05966970d.exe
Size

735KB
MD5

7c4dab2aae3b500e62bcc2e69e2e2e1b
SHA1

5d4b0e4c0837094a15902c0a984351dbf7fe9bfb
SHA256

9079c18a43d9c576c2f4ed584358db68bbbf3c390fb6612df4120fc05966970d
SHA512

93266ff84c0533ce771a02dea4c78b67c7a0ff431554788633f63396cfb20373ef0269d96d3d2c7be1c8a373df41b782e36f8bab80fdd56c69af9cde9c5f030c
SSDEEP

12288:N6XW+BvXvl1sVpC0gu60tuyS6s3tjf/uAt2ewC3RFo/F:Nn+BvPZu6PyS6EdHuAtjw9/F

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

192.168.1.2:2221

Mutex

DC_MUTEX-CRH9ZTG

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
FadcphRiUJC6
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\MSDCSC\\msdcsc.exe"	explore.exe

Executes dropped EXE 2 IoCs

pid	Process
740	explore.exe
2860	msdcsc.exe

Loads dropped DLL 2 IoCs

pid	Process
740	explore.exe
740	explore.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\MSDCSC\\msdcsc.exe"	explore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explore.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	740	explore.exe
Token: SeSecurityPrivilege	740	explore.exe
Token: SeTakeOwnershipPrivilege	740	explore.exe
Token: SeLoadDriverPrivilege	740	explore.exe
Token: SeSystemProfilePrivilege	740	explore.exe
Token: SeSystemtimePrivilege	740	explore.exe
Token: SeProfSingleProcessPrivilege	740	explore.exe
Token: SeIncBasePriorityPrivilege	740	explore.exe
Token: SeCreatePagefilePrivilege	740	explore.exe
Token: SeBackupPrivilege	740	explore.exe
Token: SeRestorePrivilege	740	explore.exe
Token: SeShutdownPrivilege	740	explore.exe
Token: SeDebugPrivilege	740	explore.exe
Token: SeSystemEnvironmentPrivilege	740	explore.exe
Token: SeChangeNotifyPrivilege	740	explore.exe
Token: SeRemoteShutdownPrivilege	740	explore.exe
Token: SeUndockPrivilege	740	explore.exe
Token: SeManageVolumePrivilege	740	explore.exe
Token: SeImpersonatePrivilege	740	explore.exe
Token: SeCreateGlobalPrivilege	740	explore.exe
Token: 33	740	explore.exe
Token: 34	740	explore.exe
Token: 35	740	explore.exe
Token: SeIncreaseQuotaPrivilege	2860	msdcsc.exe
Token: SeSecurityPrivilege	2860	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2860	msdcsc.exe
Token: SeLoadDriverPrivilege	2860	msdcsc.exe
Token: SeSystemProfilePrivilege	2860	msdcsc.exe
Token: SeSystemtimePrivilege	2860	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2860	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2860	msdcsc.exe
Token: SeCreatePagefilePrivilege	2860	msdcsc.exe
Token: SeBackupPrivilege	2860	msdcsc.exe
Token: SeRestorePrivilege	2860	msdcsc.exe
Token: SeShutdownPrivilege	2860	msdcsc.exe
Token: SeDebugPrivilege	2860	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2860	msdcsc.exe
Token: SeChangeNotifyPrivilege	2860	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2860	msdcsc.exe
Token: SeUndockPrivilege	2860	msdcsc.exe
Token: SeManageVolumePrivilege	2860	msdcsc.exe
Token: SeImpersonatePrivilege	2860	msdcsc.exe
Token: SeCreateGlobalPrivilege	2860	msdcsc.exe
Token: 33	2860	msdcsc.exe
Token: 34	2860	msdcsc.exe
Token: 35	2860	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2860	msdcsc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 740	2336	9079c18a43d9c576c2f4ed584358db68bbbf3c390fb6612df4120fc05966970d.exe	30
PID 2336 wrote to memory of 740	2336	9079c18a43d9c576c2f4ed584358db68bbbf3c390fb6612df4120fc05966970d.exe	30
PID 2336 wrote to memory of 740	2336	9079c18a43d9c576c2f4ed584358db68bbbf3c390fb6612df4120fc05966970d.exe	30
PID 2336 wrote to memory of 740	2336	9079c18a43d9c576c2f4ed584358db68bbbf3c390fb6612df4120fc05966970d.exe	30
PID 740 wrote to memory of 2860	740	explore.exe	32
PID 740 wrote to memory of 2860	740	explore.exe	32
PID 740 wrote to memory of 2860	740	explore.exe	32
PID 740 wrote to memory of 2860	740	explore.exe	32

C:\Users\Admin\AppData\Local\Temp\9079c18a43d9c576c2f4ed584358db68bbbf3c390fb6612df4120fc05966970d.exe
"C:\Users\Admin\AppData\Local\Temp\9079c18a43d9c576c2f4ed584358db68bbbf3c390fb6612df4120fc05966970d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Users\Admin\AppData\Local\Temp\explore.exe
  "C:\Users\Admin\AppData\Local\Temp\explore.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:740
- - C:\MSDCSC\msdcsc.exe
    "C:\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\explore.exe

Filesize
658KB

MD5
6e5125e381195c09c166517a95593a52

SHA1
6cae8232e8bfaa47ea625da645fb6e734e2bc2d2

SHA256
b5f10bb87e1da3b26f8b8252160e7d0a9df523ac6298090742f3b758882cef3a

SHA512
163c8997eb2e22656dd48006576afaf3f7fb6b9ce2c884ac05afd813381f76e4e433ed56a4d23533a8f47711db192ffd5874d1e639531622432394218e1a34e4

Download Submit
memory/740-25-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/740-12-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/2336-3-0x000007FEF5840000-0x000007FEF61DD000-memory.dmp

Filesize
9.6MB

Download
memory/2336-0-0x000007FEF5AFE000-0x000007FEF5AFF000-memory.dmp

Filesize
4KB

Download
memory/2336-11-0x000007FEF5840000-0x000007FEF61DD000-memory.dmp

Filesize
9.6MB

Download
memory/2336-2-0x000007FEF5840000-0x000007FEF61DD000-memory.dmp

Filesize
9.6MB

Download
memory/2336-1-0x000007FEF5840000-0x000007FEF61DD000-memory.dmp

Filesize
9.6MB

Download
memory/2860-26-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2860-28-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2860-30-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2860-32-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2860-34-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads