29d641160235fa89fcca7c2351e4bba30fa883ee23447ebaaa6beb26e9e05b64

Analysis

max time kernel
142s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
30/08/2022, 00:48

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General

Target
e4c1c031243be44c4d292d8c116975a0.exe
Size 184KB
Sample220830-a5r4ksadf2
SHA256 29d641160235fa89fcca7c2351e4bba30fa883ee23447ebaaa6beb26e9e05b64
MD5 e4c1c031243be44c4d292d8c116975a0
SHA1 982bc70b6870482a9f87e594cc0430f7b64f4e71
SHA512 08918b2d2e62b54ebf4749b6f34798287be1112a3e1bf41fba780946abf31dbba8c80cc805a603b039ef6f811e3e0fac9f430436bf7968c999a6fab2a66aed86
SSDEEP 3072:DBu/booFZs+4oOYcmtblkF/pstBaDqwONnct43EpstBaDqwONnct43rBl3N2UR:DBu/boGUoOcGF/p/uwONct43Ep/uwON/
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3580	632	rundll32.exe	49

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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	e4c1c031243be44c4d292d8c116975a0.exe

Loads dropped DLL 1 IoCs

pid	Process
4224	rundll32.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2832	4224	WerFault.exe	88

Script User-Agent 1 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	19	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 2136	2100	e4c1c031243be44c4d292d8c116975a0.exe	85
PID 2100 wrote to memory of 2136	2100	e4c1c031243be44c4d292d8c116975a0.exe	85
PID 2100 wrote to memory of 2136	2100	e4c1c031243be44c4d292d8c116975a0.exe	85
PID 3580 wrote to memory of 4224	3580	rundll32.exe	88
PID 3580 wrote to memory of 4224	3580	rundll32.exe	88
PID 3580 wrote to memory of 4224	3580	rundll32.exe	88

C:\Users\Admin\AppData\Local\Temp\e4c1c031243be44c4d292d8c116975a0.exe
"C:\Users\Admin\AppData\Local\Temp\e4c1c031243be44c4d292d8c116975a0.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2100
- C:\Users\Admin\AppData\Local\Temp\e4c1c031243be44c4d292d8c116975a0.exe
  "C:\Users\Admin\AppData\Local\Temp\e4c1c031243be44c4d292d8c116975a0.exe" -h
  2⤵
  PID:2136

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
1⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:3580
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
  2⤵
  - Loads dropped DLL
  PID:4224
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4224 -s 600
    3⤵
    - Program crash
    PID:2832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4224 -ip 4224
1⤵
PID:3432

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

db.dat

Path C:\Users\Admin\AppData\Local\Temp\db.dat
Size 557KB
SHA256 c685c604b16270bb5417594aa58f7c532e617d21f61ffe683a03c387dbbddefc
MD5 535677ceb05cbea48bc25b52a5c2da67
SHA1 52906724f2135086417fffb42a60cf6f0d55362d
SHA512 c812b3612a00afffce17613629b72a6ac43a10f7ca69376c5e3dc87d1f60e6c38432ec73de74279c6e32ca20a47e8bbd23ef06fb7be50d46494701f1bcdcfb3b
SSDEEP 12288:FV1e0UgkVT6ZT+3JCnoxgLAoCXwbePLJrH8fwpX:FV1edgkV8T0CnoxF4ePLJTMwpX
MD5 SHA1 SHA512 SSDEEP

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db.dll

Path C:\Users\Admin\AppData\Local\Temp\db.dll
Size 60KB
SHA256 73314490c80e5eb09f586e12c1f035c44f11aeaa41d2f4b08aca476132578930
MD5 4d11bd6f3172584b3fda0e9efcaf0ddb
SHA1 0581c7f087f6538a1b6d4f05d928c1df24236944
SHA512 6a023496e7ee03c2ff8e3ba445c7d7d5bfe6a1e1e1bae5c17dcf41e78ede84a166966579bf8cc7be7450d2516f869713907775e863670b10eb60c092492d2d04
SSDEEP 768:WDKKrolwgA7W2cz1Pii4A1yZHtVtQg0eBU:KKPi2Fii4TrtQg0e
MD5 SHA1 SHA512 SSDEEP

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db.dll

Path C:\Users\Admin\AppData\Local\Temp\db.dll
Size 60KB
SHA256 73314490c80e5eb09f586e12c1f035c44f11aeaa41d2f4b08aca476132578930
MD5 4d11bd6f3172584b3fda0e9efcaf0ddb
SHA1 0581c7f087f6538a1b6d4f05d928c1df24236944
SHA512 6a023496e7ee03c2ff8e3ba445c7d7d5bfe6a1e1e1bae5c17dcf41e78ede84a166966579bf8cc7be7450d2516f869713907775e863670b10eb60c092492d2d04
SSDEEP 768:WDKKrolwgA7W2cz1Pii4A1yZHtVtQg0eBU:KKPi2Fii4TrtQg0e
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads