darkcomet | b1c1fd131f896d582ee4a290b3be1cf7a8fd7447e5c38e4c1d7300acab80b8de

General

Target

IMG_2003251447.exe
Size

558KB
MD5

fc96649f5eeeb19d55ae1e581786d349
SHA1

3b6af40e040a4ed70a261df8d56c6787aab7bfeb
SHA256

146ef2521c6e02b0396042699489cefa8d4d096e03ef9ce3366e3a08ea8f2ce9
SHA512

b03797c838d12e68a3705e5aeebbab6165dc14f6962ddace1a73f44c0ee2c3939733299f32fe174285f94a9829cbcb0a8b1eff1fd22d6142ad5238a0cde979d8
SSDEEP

12288:dl7bmzxB1l9ExnMOaBXwHFT////////////////D5rOlZkg4Skk3kQwCJk/hN0:jqx4a/wl5qjkBCRJU

Score

10^/10

darkcomet 19.01 ask discovery rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

19.01 ASK

C2

morans.no-ip.biz:1700

grrr.no-ip.biz:1700

grrr.no-ip.org:1700

grrr.no-ip.org:1604

Mutex

DC_MUTEX-6TLN7NX

Attributes

gencode
f6JygSQ6qexm
install
false
offline_keylogger
true
persistence
false

Signatures

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

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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	IMG_2003251447.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2440 set thread context of 1392	2440	IMG_2003251447.exe	86

UPX packed file 16 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1392-3-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1392-8-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1392-9-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1392-10-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1392-11-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1392-13-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1392-12-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1392-20-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1392-23-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1392-26-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1392-28-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1392-30-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1392-32-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1392-34-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1392-35-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/1392-37-0x0000000000400000-0x00000000004B7000-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 3 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	IMG_2003251447.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\Local Settings	IMG_2003251447.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1392	vbc.exe
Token: SeSecurityPrivilege	1392	vbc.exe
Token: SeTakeOwnershipPrivilege	1392	vbc.exe
Token: SeLoadDriverPrivilege	1392	vbc.exe
Token: SeSystemProfilePrivilege	1392	vbc.exe
Token: SeSystemtimePrivilege	1392	vbc.exe
Token: SeProfSingleProcessPrivilege	1392	vbc.exe
Token: SeIncBasePriorityPrivilege	1392	vbc.exe
Token: SeCreatePagefilePrivilege	1392	vbc.exe
Token: SeBackupPrivilege	1392	vbc.exe
Token: SeRestorePrivilege	1392	vbc.exe
Token: SeShutdownPrivilege	1392	vbc.exe
Token: SeDebugPrivilege	1392	vbc.exe
Token: SeSystemEnvironmentPrivilege	1392	vbc.exe
Token: SeChangeNotifyPrivilege	1392	vbc.exe
Token: SeRemoteShutdownPrivilege	1392	vbc.exe
Token: SeUndockPrivilege	1392	vbc.exe
Token: SeManageVolumePrivilege	1392	vbc.exe
Token: SeImpersonatePrivilege	1392	vbc.exe
Token: SeCreateGlobalPrivilege	1392	vbc.exe
Token: 33	1392	vbc.exe
Token: 34	1392	vbc.exe
Token: 35	1392	vbc.exe
Token: 36	1392	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1392	vbc.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2440 wrote to memory of 1392	2440	IMG_2003251447.exe	86
PID 2440 wrote to memory of 1392	2440	IMG_2003251447.exe	86
PID 2440 wrote to memory of 1392	2440	IMG_2003251447.exe	86
PID 2440 wrote to memory of 1392	2440	IMG_2003251447.exe	86
PID 2440 wrote to memory of 1392	2440	IMG_2003251447.exe	86
PID 2440 wrote to memory of 1392	2440	IMG_2003251447.exe	86
PID 2440 wrote to memory of 1392	2440	IMG_2003251447.exe	86
PID 2440 wrote to memory of 1392	2440	IMG_2003251447.exe	86
PID 2440 wrote to memory of 2492	2440	IMG_2003251447.exe	88
PID 2440 wrote to memory of 2492	2440	IMG_2003251447.exe	88
PID 2440 wrote to memory of 2492	2440	IMG_2003251447.exe	88

C:\Users\Admin\AppData\Local\Temp\IMG_2003251447.exe
"C:\Users\Admin\AppData\Local\Temp\IMG_2003251447.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2440
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1392
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\xBfGv.vbs"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2492

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\xBfGv.vbs

Filesize
408B

MD5
66de5056aed22e36e666546cfd35dbfa

SHA1
7ceb49ca2eba0234a7098722f677e2501f8cbace

SHA256
9e7b02202835d463c931605f4db059d875435eee1734e9fbfebee670e66431de

SHA512
86bf23613252253549d0ef626489f18522366840eb9c6abda933201b56c2410f358514379efe7cf493774fc74db691d304d2a220bcb893eef02618480d2b92fb

Download Submit
memory/1392-10-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1392-9-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1392-3-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1392-8-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1392-11-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1392-32-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1392-35-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1392-26-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1392-34-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1392-13-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1392-12-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1392-30-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1392-20-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1392-28-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1392-37-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1392-23-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2440-5-0x0000000074BB2000-0x0000000074BB3000-memory.dmp

Filesize
4KB

Download
memory/2440-19-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/2440-21-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/2440-0-0x0000000074BB2000-0x0000000074BB3000-memory.dmp

Filesize
4KB

Download
memory/2440-7-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/2440-2-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download
memory/2440-1-0x0000000074BB0000-0x0000000075161000-memory.dmp

Filesize
5.7MB

Download

Analysis

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