2ef4baecb516236a241bb85b0b513c30a28c55baf0b7df865bba4e3d1be3038d

Analysis

max time kernel
126s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
21/12/2022, 04:14

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General

Target
ebf60b1f746406783c418b986f26f4c4.exe
Size 207KB
Sample221221-etm3psbf36
SHA256 2ef4baecb516236a241bb85b0b513c30a28c55baf0b7df865bba4e3d1be3038d
MD5 ebf60b1f746406783c418b986f26f4c4
SHA1 07e681e4f9ce54244d192002ae98346bcfe7bc7d
SHA512 45e63a6604bcf20f70d06cd08340f146583c0c5b8c2d48c96520de813a3c2fc7874d06ecf9b8a3020de7e37cbf6478ebc7bc3d404d359212f3057c3b1b6a8704
SSDEEP 6144:Izpmv1ucF/p/uwONct43Ep/uwONct43T92USK:ymR9pGHNu4UpGHNu4R2USK
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	4880	5044	rundll32.exe	43

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	ebf60b1f746406783c418b986f26f4c4.exe

Loads dropped DLL 1 IoCs

pid	Process
4900	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
2044	4900	WerFault.exe	85

Script User-Agent 1 IoCs

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

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

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4656 wrote to memory of 2556	4656	ebf60b1f746406783c418b986f26f4c4.exe	82
PID 4656 wrote to memory of 2556	4656	ebf60b1f746406783c418b986f26f4c4.exe	82
PID 4656 wrote to memory of 2556	4656	ebf60b1f746406783c418b986f26f4c4.exe	82
PID 4880 wrote to memory of 4900	4880	rundll32.exe	85
PID 4880 wrote to memory of 4900	4880	rundll32.exe	85
PID 4880 wrote to memory of 4900	4880	rundll32.exe	85

C:\Users\Admin\AppData\Local\Temp\ebf60b1f746406783c418b986f26f4c4.exe
"C:\Users\Admin\AppData\Local\Temp\ebf60b1f746406783c418b986f26f4c4.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4656
- C:\Users\Admin\AppData\Local\Temp\ebf60b1f746406783c418b986f26f4c4.exe
  "C:\Users\Admin\AppData\Local\Temp\ebf60b1f746406783c418b986f26f4c4.exe" -h
  2⤵
  PID:2556

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:4880
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
  2⤵
  - Loads dropped DLL
  PID:4900
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4900 -s 600
    3⤵
    - Program crash
    PID:2044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4900 -ip 4900
1⤵
PID:2128

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 20fb5f8100fa609f83b3af630e89091135f887d88007885aab16f89a2b38e7dc
MD5 f7e8df8e09b2ece08e769ba285f7bb92
SHA1 52157d2b18f5e9f1d932652fb4a414b5ceadfc1b
SHA512 d21490bd29490a62250b97dd14ff951f8cadb65429010b0057c31371f01487f7439f9b6327b3f214a2aaa83c4c8c5a964e76fc19936f5403f2258b777b2a29b5
SSDEEP 12288:+V1e0UgkVT6ZT+3JCnoxgLGImxuCXwbePLJrH8fwpO4SG:+V1edgkV8T0Cnoxjf4ePLJTMwpOA
MD5 SHA1 SHA512 SSDEEP

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db.dll

Path C:\Users\Admin\AppData\Local\Temp\db.dll
Size 52KB
SHA256 3d73e4425bb7294f20ef86096504ab96d288bd70d2bc6a8361b629903f3b1d01
MD5 845a5f94673e266f80fae41538a94db1
SHA1 a8ed5ba958b94eb55a44f20a4791a58b76e91f0c
SHA512 f01450a61a6b2daec92fab31c9f153c76574f169f3fef2c6d0cf9283cf730a099c9b7c0cbc4ac44cc4d3c067565a49b8135aa85b745ea340a9d5f8c9dc5c3f81
SSDEEP 768:SJZtqsi21F/i//PzxH08AZhEZYamtVtBFw8:SRD89H087CtBW8
MD5 SHA1 SHA512 SSDEEP

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db.dll

Path C:\Users\Admin\AppData\Local\Temp\db.dll
Size 52KB
SHA256 3d73e4425bb7294f20ef86096504ab96d288bd70d2bc6a8361b629903f3b1d01
MD5 845a5f94673e266f80fae41538a94db1
SHA1 a8ed5ba958b94eb55a44f20a4791a58b76e91f0c
SHA512 f01450a61a6b2daec92fab31c9f153c76574f169f3fef2c6d0cf9283cf730a099c9b7c0cbc4ac44cc4d3c067565a49b8135aa85b745ea340a9d5f8c9dc5c3f81
SSDEEP 768:SJZtqsi21F/i//PzxH08AZhEZYamtVtBFw8:SRD89H087CtBW8
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads