4bb31847846180bf78033b5eb7761b874b114f6dd086862472915be761fc042a

Analysis

max time kernel
91s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
09-06-2022 14:12

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General

Target

7zS8A52FD1B/62a1ea23da745_6e68c9a.exe
Size

312KB
MD5

0cad21764fe956f3028096ff3ff37549
SHA1

09ceb67ca8d995e8811e6f0d13f7b01377f7f8c5
SHA256

f65a68dcc63bd141e3a6619ed81b9c0ff3a5492ebd73034f8c794681f1875e3e
SHA512

4733ea55c8aa918cd7dc35bfb97f5b9f59653244bae98caa3b9d4c7c60f8d7d249e8c20b191345923aa0db60137a0a04b8b20f589bef164076e2f8ec89529542

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.

Processes:

rundll32.exe

description pid pid_target process target process

Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 3732 480 rundll32.exe

description	pid	pid_target	process	target process
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3732	480	rundll32.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

Processes:

62a1ea23da745_6e68c9a.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	62a1ea23da745_6e68c9a.exe

Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

1460 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

Processes:

WerFault.exe

pid pid_target process target process

4512 1460 WerFault.exe rundll32.exe
Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.

Processes:

description flow ioc

HTTP User-Agent header 5 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

62a1ea23da745_6e68c9a.exe62a1ea23da745_6e68c9a.exe

pid process

1420 62a1ea23da745_6e68c9a.exe
1420 62a1ea23da745_6e68c9a.exe
3280 62a1ea23da745_6e68c9a.exe
3280 62a1ea23da745_6e68c9a.exe

pid	process
1460	rundll32.exe

pid	pid_target	process	target process
4512	1460	WerFault.exe	rundll32.exe

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

pid	process
1420	62a1ea23da745_6e68c9a.exe
1420	62a1ea23da745_6e68c9a.exe
3280	62a1ea23da745_6e68c9a.exe
3280	62a1ea23da745_6e68c9a.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

62a1ea23da745_6e68c9a.exerundll32.exe

description	pid	process	target process
PID 1420 wrote to memory of 3280	1420	62a1ea23da745_6e68c9a.exe	62a1ea23da745_6e68c9a.exe
PID 1420 wrote to memory of 3280	1420	62a1ea23da745_6e68c9a.exe	62a1ea23da745_6e68c9a.exe
PID 1420 wrote to memory of 3280	1420	62a1ea23da745_6e68c9a.exe	62a1ea23da745_6e68c9a.exe
PID 3732 wrote to memory of 1460	3732	rundll32.exe	rundll32.exe
PID 3732 wrote to memory of 1460	3732	rundll32.exe	rundll32.exe
PID 3732 wrote to memory of 1460	3732	rundll32.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\7zS8A52FD1B\62a1ea23da745_6e68c9a.exe
"C:\Users\Admin\AppData\Local\Temp\7zS8A52FD1B\62a1ea23da745_6e68c9a.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1420

C:\Users\Admin\AppData\Local\Temp\7zS8A52FD1B\62a1ea23da745_6e68c9a.exe
"C:\Users\Admin\AppData\Local\Temp\7zS8A52FD1B\62a1ea23da745_6e68c9a.exe" help
2⤵
- Suspicious use of SetWindowsHookEx
PID:3280

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",global
1⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:3732

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",global
2⤵
- Loads dropped DLL
PID:1460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1460 -s 600
3⤵
- Program crash
PID:4512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1460 -ip 1460
1⤵
PID:3452

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\db.dat
Filesize
557KB

MD5
215e381e9a16deb017b550e8a2480760

SHA1
56f4a18a314b001d2d1408e5825ed6bdf89b9f45

SHA256
6131812d6cdf3460443e46b4b348cb57e14c295c14fd78d7b994f9b790bfc491

SHA512
d1e7299b26928e8ebb08cc9d050bde2577c3f3170cfacf842e9fdabbe23c941e20445451860dbdbdc468a348b068a08447f193f7b2865140bf48920ae461197b

Download Submit
C:\Users\Admin\AppData\Local\Temp\db.dll
Filesize
52KB

MD5
7ffef7319bb7963fa71d05c0b3026f02

SHA1
e1f2ef0b151923e4312d5e958ff438beb6ba1d5b

SHA256
4f17ad05d7ed000195571c44a080d188f2309b92773fab60ca4e569864fa6fa4

SHA512
dea9e5627032ed95d34baa6677e64b3b8ffd12e512aee7b2db9ee6509357ec74366eb005379a327cb600a6c597479d7e48102b4c60bc57ba54b612ece30d3ed2

Download Submit
C:\Users\Admin\AppData\Local\Temp\db.dll
Filesize
52KB

MD5
7ffef7319bb7963fa71d05c0b3026f02

SHA1
e1f2ef0b151923e4312d5e958ff438beb6ba1d5b

SHA256
4f17ad05d7ed000195571c44a080d188f2309b92773fab60ca4e569864fa6fa4

SHA512
dea9e5627032ed95d34baa6677e64b3b8ffd12e512aee7b2db9ee6509357ec74366eb005379a327cb600a6c597479d7e48102b4c60bc57ba54b612ece30d3ed2

Download Submit
memory/1460-132-0x0000000000000000-mapping.dmp

Download
memory/3280-130-0x0000000000000000-mapping.dmp

Download