darkcomet | 4b286b592fa6d26241ab969bae236d4952457f2188d97cc406992008dc060768

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-12-2024 13:13

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General

Target

setup1.56.exe
Size

1.1MB
MD5

80a6f592279ea5ee33110734677e5d62
SHA1

15a6965cc45a865f94fb05f3931d27acba174415
SHA256

dde6d8365ab5c6e79d83754deaa326e3cf649d5793270fbddecfbd16f42f9262
SHA512

9a495f0091e00b9ca0e93bd18c348dbeef8c788a9825b283b75912b50b6ca6ac2192a846a47f77494589ec5963407fc85669f6aeac5c826e777d2dc54dd79960
SSDEEP

24576:dYi0aeKVUQBoBsrjOP2mnQQsMEqs1MLbp68xcjuJmSOn79F3vqu:dYiLeK7IsrjOP2WNsCs1MLrxUuJm/n7f

Score

10^/10

darkcomet ot-10aug discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

OT-10aug

h23.us.to:65432

t4rt4r.zapto.org:9384

Mutex

DC_MUTEX-742F3S6

Attributes

InstallPath
W1Nrar\svchost.exe
gencode
wB67Vbr5dSJp
install
true
offline_keylogger
true
persistence
false
reg_key
Host Process for Windows Services

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:\\Users\\Admin\\AppData\\Roaming\\W1Nrar\\svchost.exe"	setup1.56.exe

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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	setup1.56.exe

Executes dropped EXE 2 IoCs

pid	Process
1100	svchost.exe
3712	svchost.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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Host Process for Windows Services = "C:\\Users\\Admin\\AppData\\Roaming\\W1Nrar\\svchost.exe"	setup1.56.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4808 set thread context of 3508	4808	setup1.56.exe	82
PID 1100 set thread context of 3712	1100	svchost.exe	84

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4808-0-0x0000000000400000-0x00000000007CE000-memory.dmp	upx
behavioral2/memory/4808-2-0x0000000000400000-0x00000000007CE000-memory.dmp	upx
behavioral2/memory/4808-7-0x0000000000400000-0x00000000007CE000-memory.dmp	upx
behavioral2/files/0x0008000000023c5d-15.dat	upx
behavioral2/memory/1100-20-0x0000000000400000-0x00000000007CE000-memory.dmp	upx
behavioral2/memory/1100-21-0x0000000000400000-0x00000000007CE000-memory.dmp	upx
behavioral2/memory/1100-26-0x0000000000400000-0x00000000007CE000-memory.dmp	upx

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 4 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	setup1.56.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	setup1.56.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3508	setup1.56.exe
Token: SeSecurityPrivilege	3508	setup1.56.exe
Token: SeTakeOwnershipPrivilege	3508	setup1.56.exe
Token: SeLoadDriverPrivilege	3508	setup1.56.exe
Token: SeSystemProfilePrivilege	3508	setup1.56.exe
Token: SeSystemtimePrivilege	3508	setup1.56.exe
Token: SeProfSingleProcessPrivilege	3508	setup1.56.exe
Token: SeIncBasePriorityPrivilege	3508	setup1.56.exe
Token: SeCreatePagefilePrivilege	3508	setup1.56.exe
Token: SeBackupPrivilege	3508	setup1.56.exe
Token: SeRestorePrivilege	3508	setup1.56.exe
Token: SeShutdownPrivilege	3508	setup1.56.exe
Token: SeDebugPrivilege	3508	setup1.56.exe
Token: SeSystemEnvironmentPrivilege	3508	setup1.56.exe
Token: SeChangeNotifyPrivilege	3508	setup1.56.exe
Token: SeRemoteShutdownPrivilege	3508	setup1.56.exe
Token: SeUndockPrivilege	3508	setup1.56.exe
Token: SeManageVolumePrivilege	3508	setup1.56.exe
Token: SeImpersonatePrivilege	3508	setup1.56.exe
Token: SeCreateGlobalPrivilege	3508	setup1.56.exe
Token: 33	3508	setup1.56.exe
Token: 34	3508	setup1.56.exe
Token: 35	3508	setup1.56.exe
Token: 36	3508	setup1.56.exe
Token: SeIncreaseQuotaPrivilege	3712	svchost.exe
Token: SeSecurityPrivilege	3712	svchost.exe
Token: SeTakeOwnershipPrivilege	3712	svchost.exe
Token: SeLoadDriverPrivilege	3712	svchost.exe
Token: SeSystemProfilePrivilege	3712	svchost.exe
Token: SeSystemtimePrivilege	3712	svchost.exe
Token: SeProfSingleProcessPrivilege	3712	svchost.exe
Token: SeIncBasePriorityPrivilege	3712	svchost.exe
Token: SeCreatePagefilePrivilege	3712	svchost.exe
Token: SeBackupPrivilege	3712	svchost.exe
Token: SeRestorePrivilege	3712	svchost.exe
Token: SeShutdownPrivilege	3712	svchost.exe
Token: SeDebugPrivilege	3712	svchost.exe
Token: SeSystemEnvironmentPrivilege	3712	svchost.exe
Token: SeChangeNotifyPrivilege	3712	svchost.exe
Token: SeRemoteShutdownPrivilege	3712	svchost.exe
Token: SeUndockPrivilege	3712	svchost.exe
Token: SeManageVolumePrivilege	3712	svchost.exe
Token: SeImpersonatePrivilege	3712	svchost.exe
Token: SeCreateGlobalPrivilege	3712	svchost.exe
Token: 33	3712	svchost.exe
Token: 34	3712	svchost.exe
Token: 35	3712	svchost.exe
Token: 36	3712	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3712	svchost.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 4808 wrote to memory of 3508	4808	setup1.56.exe	82
PID 4808 wrote to memory of 3508	4808	setup1.56.exe	82
PID 4808 wrote to memory of 3508	4808	setup1.56.exe	82
PID 4808 wrote to memory of 3508	4808	setup1.56.exe	82
PID 4808 wrote to memory of 3508	4808	setup1.56.exe	82
PID 4808 wrote to memory of 3508	4808	setup1.56.exe	82
PID 4808 wrote to memory of 3508	4808	setup1.56.exe	82
PID 4808 wrote to memory of 3508	4808	setup1.56.exe	82
PID 4808 wrote to memory of 3508	4808	setup1.56.exe	82
PID 4808 wrote to memory of 3508	4808	setup1.56.exe	82
PID 4808 wrote to memory of 3508	4808	setup1.56.exe	82
PID 4808 wrote to memory of 3508	4808	setup1.56.exe	82
PID 4808 wrote to memory of 3508	4808	setup1.56.exe	82
PID 4808 wrote to memory of 3508	4808	setup1.56.exe	82
PID 3508 wrote to memory of 1100	3508	setup1.56.exe	83
PID 3508 wrote to memory of 1100	3508	setup1.56.exe	83
PID 3508 wrote to memory of 1100	3508	setup1.56.exe	83
PID 1100 wrote to memory of 3712	1100	svchost.exe	84
PID 1100 wrote to memory of 3712	1100	svchost.exe	84
PID 1100 wrote to memory of 3712	1100	svchost.exe	84
PID 1100 wrote to memory of 3712	1100	svchost.exe	84
PID 1100 wrote to memory of 3712	1100	svchost.exe	84
PID 1100 wrote to memory of 3712	1100	svchost.exe	84
PID 1100 wrote to memory of 3712	1100	svchost.exe	84
PID 1100 wrote to memory of 3712	1100	svchost.exe	84
PID 1100 wrote to memory of 3712	1100	svchost.exe	84
PID 1100 wrote to memory of 3712	1100	svchost.exe	84
PID 1100 wrote to memory of 3712	1100	svchost.exe	84
PID 1100 wrote to memory of 3712	1100	svchost.exe	84
PID 1100 wrote to memory of 3712	1100	svchost.exe	84
PID 1100 wrote to memory of 3712	1100	svchost.exe	84

C:\Users\Admin\AppData\Local\Temp\setup1.56.exe
"C:\Users\Admin\AppData\Local\Temp\setup1.56.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4808
- C:\Users\Admin\AppData\Local\Temp\setup1.56.exe
  "C:\Users\Admin\AppData\Local\Temp\setup1.56.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3508
- - C:\Users\Admin\AppData\Roaming\W1Nrar\svchost.exe
    "C:\Users\Admin\AppData\Roaming\W1Nrar\svchost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1100
  - - C:\Users\Admin\AppData\Roaming\W1Nrar\svchost.exe
      "C:\Users\Admin\AppData\Roaming\W1Nrar\svchost.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:3712

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

Query Registry

T1012

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\Roaming\W1Nrar\svchost.exe

Filesize
1.1MB

MD5
80a6f592279ea5ee33110734677e5d62

SHA1
15a6965cc45a865f94fb05f3931d27acba174415

SHA256
dde6d8365ab5c6e79d83754deaa326e3cf649d5793270fbddecfbd16f42f9262

SHA512
9a495f0091e00b9ca0e93bd18c348dbeef8c788a9825b283b75912b50b6ca6ac2192a846a47f77494589ec5963407fc85669f6aeac5c826e777d2dc54dd79960

Download Submit
memory/1100-26-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/1100-21-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/1100-20-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/3508-24-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3508-4-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3508-5-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3508-8-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3508-9-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3508-10-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-32-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-42-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-49-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-48-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-47-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-31-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-46-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-34-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-33-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-35-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-36-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-37-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-38-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-39-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-40-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-41-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-45-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-43-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3712-44-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4808-7-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/4808-0-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download
memory/4808-1-0x0000000000A80000-0x0000000000A81000-memory.dmp

Filesize
4KB

Download
memory/4808-3-0x0000000000498000-0x000000000049F000-memory.dmp

Filesize
28KB

Download
memory/4808-2-0x0000000000400000-0x00000000007CE000-memory.dmp

Filesize
3.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads