darkcomet | 4db98d034d9b995763cb7f86d029c26fab5759b48f358506138df3197843cc42

General

Target

JaffaCakes118_873bb8ea19e0303bd459077aa20c0a56.exe
Size

1.2MB
MD5

873bb8ea19e0303bd459077aa20c0a56
SHA1

c2cfef2c0eabde03765d267e2c437306cb8dcac4
SHA256

4db98d034d9b995763cb7f86d029c26fab5759b48f358506138df3197843cc42
SHA512

f597c6c2c4c732039ee59cac13d1c5a6f4d6a895dcdad02abe3a9ab3a8174ac3f2b46968c8388432b4fd28d0bc2439ea5d953dc4842023289b192e14330f5443
SSDEEP

24576:GFE//Tct4bOsjItd3vCrUg61MJFWQ7KLK4+49ZN7Ja1k:sSVjIr3vTg61oFWLLK4+4VJH

Score

10^/10

darkcomet guest16_min discovery rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16_min

C2

46.228.199.142:1604

Mutex

DCMIN_MUTEX-0TL86R9

Attributes

gencode
gxciUkYfaKlH
install
false
offline_keylogger
true
persistence
false

rc4.plain

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
5804	mscds.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/3164-20-0x0000000000400000-0x0000000000535000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3164 set thread context of 5804	3164	JaffaCakes118_873bb8ea19e0303bd459077aa20c0a56.exe	87

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3164-0-0x0000000000400000-0x0000000000535000-memory.dmp	upx
behavioral2/memory/3164-20-0x0000000000400000-0x0000000000535000-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 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	mscds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_873bb8ea19e0303bd459077aa20c0a56.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	5804	mscds.exe
Token: SeSecurityPrivilege	5804	mscds.exe
Token: SeTakeOwnershipPrivilege	5804	mscds.exe
Token: SeLoadDriverPrivilege	5804	mscds.exe
Token: SeSystemProfilePrivilege	5804	mscds.exe
Token: SeSystemtimePrivilege	5804	mscds.exe
Token: SeProfSingleProcessPrivilege	5804	mscds.exe
Token: SeIncBasePriorityPrivilege	5804	mscds.exe
Token: SeCreatePagefilePrivilege	5804	mscds.exe
Token: SeBackupPrivilege	5804	mscds.exe
Token: SeRestorePrivilege	5804	mscds.exe
Token: SeShutdownPrivilege	5804	mscds.exe
Token: SeDebugPrivilege	5804	mscds.exe
Token: SeSystemEnvironmentPrivilege	5804	mscds.exe
Token: SeChangeNotifyPrivilege	5804	mscds.exe
Token: SeRemoteShutdownPrivilege	5804	mscds.exe
Token: SeUndockPrivilege	5804	mscds.exe
Token: SeManageVolumePrivilege	5804	mscds.exe
Token: SeImpersonatePrivilege	5804	mscds.exe
Token: SeCreateGlobalPrivilege	5804	mscds.exe
Token: 33	5804	mscds.exe
Token: 34	5804	mscds.exe
Token: 35	5804	mscds.exe
Token: 36	5804	mscds.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5804	mscds.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3164 wrote to memory of 5804	3164	JaffaCakes118_873bb8ea19e0303bd459077aa20c0a56.exe	87
PID 3164 wrote to memory of 5804	3164	JaffaCakes118_873bb8ea19e0303bd459077aa20c0a56.exe	87
PID 3164 wrote to memory of 5804	3164	JaffaCakes118_873bb8ea19e0303bd459077aa20c0a56.exe	87
PID 3164 wrote to memory of 5804	3164	JaffaCakes118_873bb8ea19e0303bd459077aa20c0a56.exe	87
PID 3164 wrote to memory of 5804	3164	JaffaCakes118_873bb8ea19e0303bd459077aa20c0a56.exe	87
PID 3164 wrote to memory of 5804	3164	JaffaCakes118_873bb8ea19e0303bd459077aa20c0a56.exe	87
PID 3164 wrote to memory of 5804	3164	JaffaCakes118_873bb8ea19e0303bd459077aa20c0a56.exe	87
PID 3164 wrote to memory of 5804	3164	JaffaCakes118_873bb8ea19e0303bd459077aa20c0a56.exe	87
PID 3164 wrote to memory of 5804	3164	JaffaCakes118_873bb8ea19e0303bd459077aa20c0a56.exe	87
PID 3164 wrote to memory of 5804	3164	JaffaCakes118_873bb8ea19e0303bd459077aa20c0a56.exe	87
PID 3164 wrote to memory of 5804	3164	JaffaCakes118_873bb8ea19e0303bd459077aa20c0a56.exe	87
PID 3164 wrote to memory of 5804	3164	JaffaCakes118_873bb8ea19e0303bd459077aa20c0a56.exe	87

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_873bb8ea19e0303bd459077aa20c0a56.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_873bb8ea19e0303bd459077aa20c0a56.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3164
- C:\Users\Admin\AppData\Local\Temp\mscds.exe
  "C:\Users\Admin\AppData\Local\Temp\mscds.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:5804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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\Local\Temp\aut5C1A.tmp

Filesize
660KB

MD5
08d1976e86b71487566bee8b77dc3bd4

SHA1
9d50b5a89629982e9f8cce7fea7a2bff5b506511

SHA256
be28d1c82fbb806ff59c831d9ca25a3c791aca1c4612c7457be3809367395c7f

SHA512
47bfc6a434e666dc0b8ef99590d02006761dbc84d4f5f7f944c88b63c1f1f1d6deb9e03dbaafd5b57739cbf2294e16ef45666481c8995cc17a535767416265ad

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

Filesize
660KB

MD5
b04914b3c4c10e5ffa59618a028204d0

SHA1
6b41702ec63fa4f2043e4d2f64355efe01b16c2a

SHA256
a4619a4f43620ea5f8db77309001597a8e2fbc9ea2db73eda43e5e885fb84248

SHA512
c8be003ec5cb956f71526d1f73daa7a502529663e4d2bef78996588141f541948d749b0a566d70b10c5e143005f2056d50aa0f63dbad26459df6d6e3209c9150

Download Submit
memory/3164-20-0x0000000000400000-0x0000000000535000-memory.dmp

Filesize
1.2MB

Download
memory/3164-0-0x0000000000400000-0x0000000000535000-memory.dmp

Filesize
1.2MB

Download
memory/5804-23-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5804-19-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5804-12-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5804-21-0x00000000023F0000-0x00000000023F1000-memory.dmp

Filesize
4KB

Download
memory/5804-15-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5804-22-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5804-17-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5804-24-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5804-25-0x00000000023F0000-0x00000000023F1000-memory.dmp

Filesize
4KB

Download
memory/5804-27-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5804-29-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5804-31-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download

Analysis

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