darkcomet | ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
19/10/2022, 21:58

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General

Target

ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe
Size

1.1MB
MD5

9190176a8a5f1b0e0697a35dfbca8cc0
SHA1

6ac56bbde75abefb5558e70ba1449a97c51e4dee
SHA256

ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1
SHA512

3fffb1bf3b574d6ed9f35e6ebae776f39de7454b7ea70e0497291700415f7a97126a497684bfa57a65da681a5465f3d44eee88acf0dde53a132c74d6b1482096
SSDEEP

24576:i4lmJOYIc2Fvz1ZkmQBYupD6cIkFkAHgE:h8rb2HHYY9/

Score

10^/10

darkcomet guest16 persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

deedoss.ddns.net:1604

Mutex

DC_MUTEX-EB6GEWM

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
qZWfLciWbEZ4
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

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\\Documents\\MSDCSC\\msdcsc.exe"	new new rat.exe

Executes dropped EXE 2 IoCs

pid	Process
4148	new new rat.exe
4820	msdcsc.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0006000000022df7-134.dat	upx
behavioral2/files/0x0006000000022df7-135.dat	upx
behavioral2/memory/4148-136-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/files/0x0002000000022e26-138.dat	upx
behavioral2/files/0x0002000000022e26-139.dat	upx
behavioral2/memory/4820-140-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4148-144-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4820-145-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	new new rat.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fJJWuPD4NeO4.lnk	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	new new rat.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	new new rat.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
344	PING.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
5012	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe
5012	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe
5012	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe

Suspicious use of AdjustPrivilegeToken 49 IoCs

description	pid	Process
Token: SeDebugPrivilege	5012	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe
Token: SeIncreaseQuotaPrivilege	4148	new new rat.exe
Token: SeSecurityPrivilege	4148	new new rat.exe
Token: SeTakeOwnershipPrivilege	4148	new new rat.exe
Token: SeLoadDriverPrivilege	4148	new new rat.exe
Token: SeSystemProfilePrivilege	4148	new new rat.exe
Token: SeSystemtimePrivilege	4148	new new rat.exe
Token: SeProfSingleProcessPrivilege	4148	new new rat.exe
Token: SeIncBasePriorityPrivilege	4148	new new rat.exe
Token: SeCreatePagefilePrivilege	4148	new new rat.exe
Token: SeBackupPrivilege	4148	new new rat.exe
Token: SeRestorePrivilege	4148	new new rat.exe
Token: SeShutdownPrivilege	4148	new new rat.exe
Token: SeDebugPrivilege	4148	new new rat.exe
Token: SeSystemEnvironmentPrivilege	4148	new new rat.exe
Token: SeChangeNotifyPrivilege	4148	new new rat.exe
Token: SeRemoteShutdownPrivilege	4148	new new rat.exe
Token: SeUndockPrivilege	4148	new new rat.exe
Token: SeManageVolumePrivilege	4148	new new rat.exe
Token: SeImpersonatePrivilege	4148	new new rat.exe
Token: SeCreateGlobalPrivilege	4148	new new rat.exe
Token: 33	4148	new new rat.exe
Token: 34	4148	new new rat.exe
Token: 35	4148	new new rat.exe
Token: 36	4148	new new rat.exe
Token: SeIncreaseQuotaPrivilege	4820	msdcsc.exe
Token: SeSecurityPrivilege	4820	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4820	msdcsc.exe
Token: SeLoadDriverPrivilege	4820	msdcsc.exe
Token: SeSystemProfilePrivilege	4820	msdcsc.exe
Token: SeSystemtimePrivilege	4820	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4820	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4820	msdcsc.exe
Token: SeCreatePagefilePrivilege	4820	msdcsc.exe
Token: SeBackupPrivilege	4820	msdcsc.exe
Token: SeRestorePrivilege	4820	msdcsc.exe
Token: SeShutdownPrivilege	4820	msdcsc.exe
Token: SeDebugPrivilege	4820	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4820	msdcsc.exe
Token: SeChangeNotifyPrivilege	4820	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4820	msdcsc.exe
Token: SeUndockPrivilege	4820	msdcsc.exe
Token: SeManageVolumePrivilege	4820	msdcsc.exe
Token: SeImpersonatePrivilege	4820	msdcsc.exe
Token: SeCreateGlobalPrivilege	4820	msdcsc.exe
Token: 33	4820	msdcsc.exe
Token: 34	4820	msdcsc.exe
Token: 35	4820	msdcsc.exe
Token: 36	4820	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4820	msdcsc.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 5012 wrote to memory of 4148	5012	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe	84
PID 5012 wrote to memory of 4148	5012	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe	84
PID 5012 wrote to memory of 4148	5012	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe	84
PID 4148 wrote to memory of 4820	4148	new new rat.exe	85
PID 4148 wrote to memory of 4820	4148	new new rat.exe	85
PID 4148 wrote to memory of 4820	4148	new new rat.exe	85
PID 5012 wrote to memory of 2424	5012	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe	86
PID 5012 wrote to memory of 2424	5012	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe	86
PID 5012 wrote to memory of 2424	5012	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe	86
PID 2424 wrote to memory of 344	2424	cmd.exe	88
PID 2424 wrote to memory of 344	2424	cmd.exe	88
PID 2424 wrote to memory of 344	2424	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe
"C:\Users\Admin\AppData\Local\Temp\ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5012
- C:\Users\Admin\AppData\Local\Temp\new new rat.exe
  "C:\Users\Admin\AppData\Local\Temp\new new rat.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Checks computer location settings
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4148
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:4820
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 & del "C:\Users\Admin\AppData\Local\Temp\ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2424
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:344

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\new new rat.exe

Filesize
252KB

MD5
c04db2211b50d389e4e15f84320d3d64

SHA1
2f4fcc9b6797196f6dde99b9012db8ff892b467b

SHA256
b18a8053e6f491eafdbc4a0b555e49faa22e890160367458b211b10b800ee139

SHA512
32f414ee930e214eaad4763bae6ea85cb5a8e8ca22cbfa1300fefa9223f371b96003b4005a62fc777a13df2d3dec751a0e330c7bff47253b2d9a7aec72276832

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

Filesize
252KB

MD5
c04db2211b50d389e4e15f84320d3d64

SHA1
2f4fcc9b6797196f6dde99b9012db8ff892b467b

SHA256
b18a8053e6f491eafdbc4a0b555e49faa22e890160367458b211b10b800ee139

SHA512
32f414ee930e214eaad4763bae6ea85cb5a8e8ca22cbfa1300fefa9223f371b96003b4005a62fc777a13df2d3dec751a0e330c7bff47253b2d9a7aec72276832

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
252KB

MD5
c04db2211b50d389e4e15f84320d3d64

SHA1
2f4fcc9b6797196f6dde99b9012db8ff892b467b

SHA256
b18a8053e6f491eafdbc4a0b555e49faa22e890160367458b211b10b800ee139

SHA512
32f414ee930e214eaad4763bae6ea85cb5a8e8ca22cbfa1300fefa9223f371b96003b4005a62fc777a13df2d3dec751a0e330c7bff47253b2d9a7aec72276832

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
252KB

MD5
c04db2211b50d389e4e15f84320d3d64

SHA1
2f4fcc9b6797196f6dde99b9012db8ff892b467b

SHA256
b18a8053e6f491eafdbc4a0b555e49faa22e890160367458b211b10b800ee139

SHA512
32f414ee930e214eaad4763bae6ea85cb5a8e8ca22cbfa1300fefa9223f371b96003b4005a62fc777a13df2d3dec751a0e330c7bff47253b2d9a7aec72276832

Download Submit
memory/4148-136-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4148-144-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4820-140-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4820-145-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/5012-132-0x0000000074770000-0x0000000074D21000-memory.dmp

Filesize
5.7MB

Download
memory/5012-143-0x0000000074770000-0x0000000074D21000-memory.dmp

Filesize
5.7MB

Download