darkcomet | ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1

Analysis

max time kernel
151s
max time network
42s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-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
604	new new rat.exe
1792	msdcsc.exe

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0007000000005c50-56.dat	upx
behavioral1/files/0x0007000000005c50-57.dat	upx
behavioral1/files/0x0007000000005c50-59.dat	upx
behavioral1/files/0x0007000000005c50-61.dat	upx
behavioral1/memory/604-64-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/files/0x00080000000122f5-66.dat	upx
behavioral1/files/0x00080000000122f5-67.dat	upx
behavioral1/files/0x00080000000122f5-69.dat	upx
behavioral1/files/0x00080000000122f5-72.dat	upx
behavioral1/memory/1792-79-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/604-80-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/1792-81-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Deletes itself 1 IoCs

pid	Process
1552	cmd.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

Loads dropped DLL 5 IoCs

pid	Process
1992	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe
1992	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe
604	new new rat.exe
604	new new rat.exe
1992	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-1-5-21-999675638-2867687379-27515722-1000\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

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
748	PING.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1992	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe
1992	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe
1992	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe

Suspicious use of AdjustPrivilegeToken 47 IoCs

description	pid	Process
Token: SeDebugPrivilege	1992	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe
Token: SeIncreaseQuotaPrivilege	604	new new rat.exe
Token: SeSecurityPrivilege	604	new new rat.exe
Token: SeTakeOwnershipPrivilege	604	new new rat.exe
Token: SeLoadDriverPrivilege	604	new new rat.exe
Token: SeSystemProfilePrivilege	604	new new rat.exe
Token: SeSystemtimePrivilege	604	new new rat.exe
Token: SeProfSingleProcessPrivilege	604	new new rat.exe
Token: SeIncBasePriorityPrivilege	604	new new rat.exe
Token: SeCreatePagefilePrivilege	604	new new rat.exe
Token: SeBackupPrivilege	604	new new rat.exe
Token: SeRestorePrivilege	604	new new rat.exe
Token: SeShutdownPrivilege	604	new new rat.exe
Token: SeDebugPrivilege	604	new new rat.exe
Token: SeSystemEnvironmentPrivilege	604	new new rat.exe
Token: SeChangeNotifyPrivilege	604	new new rat.exe
Token: SeRemoteShutdownPrivilege	604	new new rat.exe
Token: SeUndockPrivilege	604	new new rat.exe
Token: SeManageVolumePrivilege	604	new new rat.exe
Token: SeImpersonatePrivilege	604	new new rat.exe
Token: SeCreateGlobalPrivilege	604	new new rat.exe
Token: 33	604	new new rat.exe
Token: 34	604	new new rat.exe
Token: 35	604	new new rat.exe
Token: SeIncreaseQuotaPrivilege	1792	msdcsc.exe
Token: SeSecurityPrivilege	1792	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1792	msdcsc.exe
Token: SeLoadDriverPrivilege	1792	msdcsc.exe
Token: SeSystemProfilePrivilege	1792	msdcsc.exe
Token: SeSystemtimePrivilege	1792	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1792	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1792	msdcsc.exe
Token: SeCreatePagefilePrivilege	1792	msdcsc.exe
Token: SeBackupPrivilege	1792	msdcsc.exe
Token: SeRestorePrivilege	1792	msdcsc.exe
Token: SeShutdownPrivilege	1792	msdcsc.exe
Token: SeDebugPrivilege	1792	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1792	msdcsc.exe
Token: SeChangeNotifyPrivilege	1792	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1792	msdcsc.exe
Token: SeUndockPrivilege	1792	msdcsc.exe
Token: SeManageVolumePrivilege	1792	msdcsc.exe
Token: SeImpersonatePrivilege	1792	msdcsc.exe
Token: SeCreateGlobalPrivilege	1792	msdcsc.exe
Token: 33	1792	msdcsc.exe
Token: 34	1792	msdcsc.exe
Token: 35	1792	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1792	msdcsc.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 604	1992	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe	27
PID 1992 wrote to memory of 604	1992	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe	27
PID 1992 wrote to memory of 604	1992	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe	27
PID 1992 wrote to memory of 604	1992	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe	27
PID 604 wrote to memory of 1792	604	new new rat.exe	28
PID 604 wrote to memory of 1792	604	new new rat.exe	28
PID 604 wrote to memory of 1792	604	new new rat.exe	28
PID 604 wrote to memory of 1792	604	new new rat.exe	28
PID 1992 wrote to memory of 1552	1992	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe	29
PID 1992 wrote to memory of 1552	1992	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe	29
PID 1992 wrote to memory of 1552	1992	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe	29
PID 1992 wrote to memory of 1552	1992	ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe	29
PID 1552 wrote to memory of 748	1552	cmd.exe	31
PID 1552 wrote to memory of 748	1552	cmd.exe	31
PID 1552 wrote to memory of 748	1552	cmd.exe	31
PID 1552 wrote to memory of 748	1552	cmd.exe	31

C:\Users\Admin\AppData\Local\Temp\ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe
"C:\Users\Admin\AppData\Local\Temp\ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1992
- 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
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:604
- - 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:1792
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 & del "C:\Users\Admin\AppData\Local\Temp\ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1.exe"
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1552
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:748

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

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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

Filesize
252KB

MD5
c04db2211b50d389e4e15f84320d3d64

SHA1
2f4fcc9b6797196f6dde99b9012db8ff892b467b

SHA256
b18a8053e6f491eafdbc4a0b555e49faa22e890160367458b211b10b800ee139

SHA512
32f414ee930e214eaad4763bae6ea85cb5a8e8ca22cbfa1300fefa9223f371b96003b4005a62fc777a13df2d3dec751a0e330c7bff47253b2d9a7aec72276832

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

Filesize
252KB

MD5
c04db2211b50d389e4e15f84320d3d64

SHA1
2f4fcc9b6797196f6dde99b9012db8ff892b467b

SHA256
b18a8053e6f491eafdbc4a0b555e49faa22e890160367458b211b10b800ee139

SHA512
32f414ee930e214eaad4763bae6ea85cb5a8e8ca22cbfa1300fefa9223f371b96003b4005a62fc777a13df2d3dec751a0e330c7bff47253b2d9a7aec72276832

Download Submit
\Users\Admin\AppData\Roaming\Zh8tnbTaRjJO\wWFYURvmkt.exe

Filesize
1.1MB

MD5
9190176a8a5f1b0e0697a35dfbca8cc0

SHA1
6ac56bbde75abefb5558e70ba1449a97c51e4dee

SHA256
ad6e7938400fea27e054891b1ef263329555be62ca36fee8d9640c57887865d1

SHA512
3fffb1bf3b574d6ed9f35e6ebae776f39de7454b7ea70e0497291700415f7a97126a497684bfa57a65da681a5465f3d44eee88acf0dde53a132c74d6b1482096

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

Filesize
252KB

MD5
c04db2211b50d389e4e15f84320d3d64

SHA1
2f4fcc9b6797196f6dde99b9012db8ff892b467b

SHA256
b18a8053e6f491eafdbc4a0b555e49faa22e890160367458b211b10b800ee139

SHA512
32f414ee930e214eaad4763bae6ea85cb5a8e8ca22cbfa1300fefa9223f371b96003b4005a62fc777a13df2d3dec751a0e330c7bff47253b2d9a7aec72276832

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

Filesize
252KB

MD5
c04db2211b50d389e4e15f84320d3d64

SHA1
2f4fcc9b6797196f6dde99b9012db8ff892b467b

SHA256
b18a8053e6f491eafdbc4a0b555e49faa22e890160367458b211b10b800ee139

SHA512
32f414ee930e214eaad4763bae6ea85cb5a8e8ca22cbfa1300fefa9223f371b96003b4005a62fc777a13df2d3dec751a0e330c7bff47253b2d9a7aec72276832

Download Submit
memory/604-64-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/604-77-0x0000000004DB0000-0x0000000004E67000-memory.dmp

Filesize
732KB

Download
memory/604-78-0x0000000004DB0000-0x0000000004E67000-memory.dmp

Filesize
732KB

Download
memory/604-80-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1792-79-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1792-81-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1992-54-0x0000000076141000-0x0000000076143000-memory.dmp

Filesize
8KB

Download
memory/1992-74-0x0000000074840000-0x0000000074DEB000-memory.dmp

Filesize
5.7MB

Download
memory/1992-65-0x0000000074840000-0x0000000074DEB000-memory.dmp

Filesize
5.7MB

Download
memory/1992-76-0x0000000004F00000-0x0000000004FB7000-memory.dmp

Filesize
732KB

Download
memory/1992-63-0x0000000004F00000-0x0000000004FB7000-memory.dmp

Filesize
732KB

Download
memory/1992-62-0x0000000004F00000-0x0000000004FB7000-memory.dmp

Filesize
732KB

Download
memory/1992-55-0x0000000074840000-0x0000000074DEB000-memory.dmp

Filesize
5.7MB

Download