darkcomet | a67a96c84573af7472e891c437426bc8562c45ea52a66492e5d3c100e06def09

General

Target

D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe
Size

3.0MB
MD5

c5e77ee2c96212dcb64b9ead1b746dd8
SHA1

816610afe4151c9fe59449f30922f68babd665fc
SHA256

d075589cd45380aab929c10ce82babf63533a5025527b1f7f30b55059c5d0ad2
SHA512

2e8418f8b82686a76f83bcf4890909fa2678f7b97c49b02de84f27af2dd503260047983fde4a99a69421dada89caf7db033ade27b1d457e227cc208c02544446
SSDEEP

49152:LAI+iYFsw8ob4+vrrQtgKNnZj/Y4JneyOLHgmk7V5Pz8IF+8Ieg9uRKcT2MOmZuY:LAI+irwbVrsgKrxOLAmk3IIsuIcT2MOg

Score

10^/10

darkcomet theoldback discovery rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

THEOLDBACK

C2

cosrem.ddns.net:2301

cosrem.ddnsgeek.com:2301

cosrem.dyndns.org:2301

Mutex

DC_MUTEX-T4DJK1T

Attributes

gencode
cRqpT889gMa4
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 2 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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	dllhost.exe

Executes dropped EXE 3 IoCs

pid	Process
4000	PCCleaner.exe
2344	dllhost.exe
3268	dllhost.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2344 set thread context of 3268	2344	dllhost.exe	104

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\PC Helpsoft\PC Cleaner\PCCleaner.exe	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe
File opened for modification	C:\Program Files (x86)\PC Helpsoft\PC Cleaner\Uninstall.exe	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe
File created	C:\Program Files (x86)\PC Helpsoft\PC Cleaner\Uninstall.ini	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.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 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	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dllhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dllhost.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4648	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2344	dllhost.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	2344	dllhost.exe
Token: SeIncreaseQuotaPrivilege	3268	dllhost.exe
Token: SeSecurityPrivilege	3268	dllhost.exe
Token: SeTakeOwnershipPrivilege	3268	dllhost.exe
Token: SeLoadDriverPrivilege	3268	dllhost.exe
Token: SeSystemProfilePrivilege	3268	dllhost.exe
Token: SeSystemtimePrivilege	3268	dllhost.exe
Token: SeProfSingleProcessPrivilege	3268	dllhost.exe
Token: SeIncBasePriorityPrivilege	3268	dllhost.exe
Token: SeCreatePagefilePrivilege	3268	dllhost.exe
Token: SeBackupPrivilege	3268	dllhost.exe
Token: SeRestorePrivilege	3268	dllhost.exe
Token: SeShutdownPrivilege	3268	dllhost.exe
Token: SeDebugPrivilege	3268	dllhost.exe
Token: SeSystemEnvironmentPrivilege	3268	dllhost.exe
Token: SeChangeNotifyPrivilege	3268	dllhost.exe
Token: SeRemoteShutdownPrivilege	3268	dllhost.exe
Token: SeUndockPrivilege	3268	dllhost.exe
Token: SeManageVolumePrivilege	3268	dllhost.exe
Token: SeImpersonatePrivilege	3268	dllhost.exe
Token: SeCreateGlobalPrivilege	3268	dllhost.exe
Token: 33	3268	dllhost.exe
Token: 34	3268	dllhost.exe
Token: 35	3268	dllhost.exe
Token: 36	3268	dllhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3268	dllhost.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 5048 wrote to memory of 4000	5048	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe	83
PID 5048 wrote to memory of 4000	5048	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe	83
PID 5048 wrote to memory of 4000	5048	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe	83
PID 5048 wrote to memory of 2344	5048	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe	86
PID 5048 wrote to memory of 2344	5048	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe	86
PID 5048 wrote to memory of 2344	5048	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe	86
PID 2344 wrote to memory of 4648	2344	dllhost.exe	102
PID 2344 wrote to memory of 4648	2344	dllhost.exe	102
PID 2344 wrote to memory of 4648	2344	dllhost.exe	102
PID 2344 wrote to memory of 3268	2344	dllhost.exe	104
PID 2344 wrote to memory of 3268	2344	dllhost.exe	104
PID 2344 wrote to memory of 3268	2344	dllhost.exe	104
PID 2344 wrote to memory of 3268	2344	dllhost.exe	104
PID 2344 wrote to memory of 3268	2344	dllhost.exe	104
PID 2344 wrote to memory of 3268	2344	dllhost.exe	104
PID 2344 wrote to memory of 3268	2344	dllhost.exe	104
PID 2344 wrote to memory of 3268	2344	dllhost.exe	104
PID 2344 wrote to memory of 3268	2344	dllhost.exe	104
PID 2344 wrote to memory of 3268	2344	dllhost.exe	104
PID 2344 wrote to memory of 3268	2344	dllhost.exe	104
PID 2344 wrote to memory of 3268	2344	dllhost.exe	104

C:\Users\Admin\AppData\Local\Temp\D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe
"C:\Users\Admin\AppData\Local\Temp\D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5048
- C:\Program Files (x86)\PC Helpsoft\PC Cleaner\PCCleaner.exe
  "C:\Program Files (x86)\PC Helpsoft\PC Cleaner\PCCleaner.exe"
  2⤵
  - Executes dropped EXE
  PID:4000
- C:\Users\Admin\AppData\Roaming\dllhost.exe
  "C:\Users\Admin\AppData\Roaming\dllhost.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2344
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hnjVqgcvxF" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAFE2.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4648
- - C:\Users\Admin\AppData\Roaming\dllhost.exe
    "C:\Users\Admin\AppData\Roaming\dllhost.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:3268

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2

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

Loading Replay Monitor...

Downloads

C:\Program Files (x86)\PC Helpsoft\PC Cleaner\PCCleaner.exe

Filesize
1.8MB

MD5
732978cd7c578c5b2b3c79b0a9114c2d

SHA1
3a97df574f86c9d133406761e8ec51400138e816

SHA256
cb5fbbaf0f984d6491d1c83135b849ed14b8dda5805af3bfec5cda77ac5920b3

SHA512
aa5d340c6deb1bd3d2ec2e28ee23b5cf51751edc084480bc00146475d4f5fa6aee57c431e874513b57bb9a190ec32ca1d0b667264c0a3ca6af4fe6379cbb9276

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpAFE2.tmp

Filesize
1KB

MD5
29398a568efe5c61d061406b0a47ae50

SHA1
e7f056e230f23ae0caf3e6b5e4c7a759e1e45c86

SHA256
f9c0b633d1f2cbb04ffac9445225af48901a10f8f6b345dfe0f728011c370546

SHA512
38521ae9bfea684c525a18b5a4a21c1b18554920fcd22fd8a288becf514395e395a1d0bb7a7026dec37df7ffb5236a4f83284c8a8f31ead2d27d3b320a094ba7

Download Submit
C:\Users\Admin\AppData\Roaming\dllhost.exe

Filesize
1.0MB

MD5
010b1d2cd7f379d8444180fb1ad1a721

SHA1
5798a89f64dbeac6b25d9e1410bfb11467e9c282

SHA256
fd553f69d456b3dd2454f4e4ed4a68e74e833db7455081ef110c15fbdc7444a4

SHA512
1a78ac744b3649b2e65c65c0d65f9a8dcb7ea470eaa491105a95a53581571f427bf1b3634722a8ecfb5a567c76b1ef04a9d4f5b05d0a8cc692f850d2a2b3fdb2

Download Submit
memory/2344-39-0x0000000000580000-0x000000000068C000-memory.dmp

Filesize
1.0MB

Download
memory/2344-45-0x00000000053B0000-0x0000000005406000-memory.dmp

Filesize
344KB

Download
memory/2344-40-0x0000000005050000-0x00000000050EC000-memory.dmp

Filesize
624KB

Download
memory/2344-41-0x00000000056A0000-0x0000000005C44000-memory.dmp

Filesize
5.6MB

Download
memory/2344-42-0x0000000005190000-0x0000000005222000-memory.dmp

Filesize
584KB

Download
memory/2344-44-0x0000000073330000-0x0000000073AE0000-memory.dmp

Filesize
7.7MB

Download
memory/2344-43-0x0000000005130000-0x000000000513A000-memory.dmp

Filesize
40KB

Download
memory/2344-38-0x000000007333E000-0x000000007333F000-memory.dmp

Filesize
4KB

Download
memory/2344-46-0x0000000005180000-0x0000000005188000-memory.dmp

Filesize
32KB

Download
memory/2344-71-0x0000000073330000-0x0000000073AE0000-memory.dmp

Filesize
7.7MB

Download
memory/2344-48-0x000000007333E000-0x000000007333F000-memory.dmp

Filesize
4KB

Download
memory/2344-49-0x0000000073330000-0x0000000073AE0000-memory.dmp

Filesize
7.7MB

Download
memory/2344-54-0x0000000006110000-0x00000000061FE000-memory.dmp

Filesize
952KB

Download
memory/2344-55-0x0000000006300000-0x00000000063C2000-memory.dmp

Filesize
776KB

Download
memory/3268-63-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3268-66-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3268-68-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3268-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/3268-69-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4000-27-0x0000000000400000-0x0000000000BE4000-memory.dmp

Filesize
7.9MB

Download
memory/5048-47-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/5048-73-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads