acfaacc207ef938fa1e2d19e108c109fbceeee5ad3b715bf9a24c96dfd9e9e92

Analysis

max time kernel
143s
max time network
165s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
21-03-2023 14:39

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General

Target

1d636ae88bab15613db7d92a33c0bd9d107270d68991faa01c6de1fa06364d92.exe
Size

308KB
MD5

ae6df34a140bf74860ca3165d50d8705
SHA1

ca21f7b3086341f2927f07d7005cce7cf4585c6b
SHA256

1d636ae88bab15613db7d92a33c0bd9d107270d68991faa01c6de1fa06364d92
SHA512

28080dc00054e209739bdbfb64704dae6bd5c82376606ae1fd61c4e0bfc502019e687ceb26b11a066b27f6b9c14dbce382ae3d1097954bc604a40c8ecd2117d6
SSDEEP

6144:bOsY+HgEiTA14Xn0Ti8v1bbFgXIQdjrfzNt1AEP3:i814Xn0Ti8tbJyIQdjrfzmEP3

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	3244	4600	rundll32.exe	25

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-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	1d636ae88bab15613db7d92a33c0bd9d107270d68991faa01c6de1fa06364d92.exe

Loads dropped DLL 1 IoCs

pid	Process
4060	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 2 IoCs

pid	pid_target	Process	procid_target
2336	4060	WerFault.exe	87
2456	4060	WerFault.exe	87

Script User-Agent 1 IoCs

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

description	flow	ioc
HTTP User-Agent header	16	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4628	1d636ae88bab15613db7d92a33c0bd9d107270d68991faa01c6de1fa06364d92.exe
4628	1d636ae88bab15613db7d92a33c0bd9d107270d68991faa01c6de1fa06364d92.exe
1344	1d636ae88bab15613db7d92a33c0bd9d107270d68991faa01c6de1fa06364d92.exe
1344	1d636ae88bab15613db7d92a33c0bd9d107270d68991faa01c6de1fa06364d92.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4628 wrote to memory of 1344	4628	1d636ae88bab15613db7d92a33c0bd9d107270d68991faa01c6de1fa06364d92.exe	84
PID 4628 wrote to memory of 1344	4628	1d636ae88bab15613db7d92a33c0bd9d107270d68991faa01c6de1fa06364d92.exe	84
PID 4628 wrote to memory of 1344	4628	1d636ae88bab15613db7d92a33c0bd9d107270d68991faa01c6de1fa06364d92.exe	84
PID 3244 wrote to memory of 4060	3244	rundll32.exe	87
PID 3244 wrote to memory of 4060	3244	rundll32.exe	87
PID 3244 wrote to memory of 4060	3244	rundll32.exe	87
PID 4060 wrote to memory of 2456	4060	rundll32.exe	91
PID 4060 wrote to memory of 2456	4060	rundll32.exe	91
PID 4060 wrote to memory of 2456	4060	rundll32.exe	91

C:\Users\Admin\AppData\Local\Temp\1d636ae88bab15613db7d92a33c0bd9d107270d68991faa01c6de1fa06364d92.exe
"C:\Users\Admin\AppData\Local\Temp\1d636ae88bab15613db7d92a33c0bd9d107270d68991faa01c6de1fa06364d92.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4628
- C:\Users\Admin\AppData\Local\Temp\1d636ae88bab15613db7d92a33c0bd9d107270d68991faa01c6de1fa06364d92.exe
  "C:\Users\Admin\AppData\Local\Temp\1d636ae88bab15613db7d92a33c0bd9d107270d68991faa01c6de1fa06364d92.exe" -h
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:1344

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:3244
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:4060
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4060 -s 600
    3⤵
    - Program crash
    PID:2336
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4060 -s 600
    3⤵
    - Program crash
    PID:2456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4060 -ip 4060
1⤵
PID:4476

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

C:\Users\Admin\AppData\Local\Temp\db.dat

Filesize
557KB

MD5
b15c9612f747a2c7d6c429275c853b23

SHA1
46b5013dcc6677feabafb3c35d8aec6e79e1e6d3

SHA256
07b7dbc6e80247cee12695bc386079435ec90d0228f799ff884330b9f4e3c2d5

SHA512
2f70c8c18434e7a7e1475acda04ba2d3e13fd20c73ee14ff28eda50394898333e8c7067bea69cca28cff1226cdf050db55df2bcd629fb82b9f0535a505d07305

Download Submit
C:\Users\Admin\AppData\Local\Temp\db.dll

Filesize
52KB

MD5
1b20e998d058e813dfc515867d31124f

SHA1
c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

SHA256
24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

SHA512
79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

Download Submit
C:\Users\Admin\AppData\Local\Temp\db.dll

Filesize
52KB

MD5
1b20e998d058e813dfc515867d31124f

SHA1
c9dc9c42a748af18ae1a8c882b90a2b9e3313e6f

SHA256
24a53033a2e89acf65f6a5e60d35cb223585817032635e81bf31264eb7dabd00

SHA512
79849fbdb9a9e7f7684b570d14662448b093b8aa2b23dfd95856db3a78faf75a95d95c51b8aa8506c4fbecffebcc57cd153dda38c830c05b8cd38629fae673c6

Download Submit