54151922b3a7a1f16e1b10356da10b8293b6ca897fed9d48ffeb3d2eae2685cd

Analysis

max time kernel
141s
max time network
105s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
06-03-2023 12:37

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General

Target

e7f609df5c0fcdc581a69ed69aa3c4a1.exe
Size

308KB
MD5

e7f609df5c0fcdc581a69ed69aa3c4a1
SHA1

345ac5a24438b8edb695d32bde79502023e09e31
SHA256

54151922b3a7a1f16e1b10356da10b8293b6ca897fed9d48ffeb3d2eae2685cd
SHA512

76772a9020ad88203d54ed5d792929957145057da17eff9f6b07c292fd76c0aa120b3ea8ab23c6f7a5c9a802422adf906294ace90a53d90eeafb86a92bae008c
SSDEEP

6144:bOsY+HgEiTA14Xn0Ti8v1bbFgXIQdjrfzNt1IEP3:i814Xn0Ti8tbJyIQdjrfzuEP3

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	888	4236	rundll32.exe	72

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-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	e7f609df5c0fcdc581a69ed69aa3c4a1.exe

Loads dropped DLL 1 IoCs

pid	Process
3728	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
2064	3728	WerFault.exe	88

Script User-Agent 1 IoCs

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

description	flow	ioc
HTTP User-Agent header	13	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3396	e7f609df5c0fcdc581a69ed69aa3c4a1.exe
3396	e7f609df5c0fcdc581a69ed69aa3c4a1.exe
1924	e7f609df5c0fcdc581a69ed69aa3c4a1.exe
1924	e7f609df5c0fcdc581a69ed69aa3c4a1.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3396 wrote to memory of 1924	3396	e7f609df5c0fcdc581a69ed69aa3c4a1.exe	86
PID 3396 wrote to memory of 1924	3396	e7f609df5c0fcdc581a69ed69aa3c4a1.exe	86
PID 3396 wrote to memory of 1924	3396	e7f609df5c0fcdc581a69ed69aa3c4a1.exe	86
PID 888 wrote to memory of 3728	888	rundll32.exe	88
PID 888 wrote to memory of 3728	888	rundll32.exe	88
PID 888 wrote to memory of 3728	888	rundll32.exe	88

C:\Users\Admin\AppData\Local\Temp\e7f609df5c0fcdc581a69ed69aa3c4a1.exe
"C:\Users\Admin\AppData\Local\Temp\e7f609df5c0fcdc581a69ed69aa3c4a1.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3396
- C:\Users\Admin\AppData\Local\Temp\e7f609df5c0fcdc581a69ed69aa3c4a1.exe
  "C:\Users\Admin\AppData\Local\Temp\e7f609df5c0fcdc581a69ed69aa3c4a1.exe" -h
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:1924

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:888
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
  2⤵
  - Loads dropped DLL
  PID:3728
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3728 -s 600
    3⤵
    - Program crash
    PID:2064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3728 -ip 3728
1⤵
PID:1852

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
1bd81dc243577b6a0c7f93f6bd9ae40b

SHA1
9d4e908b53e52c5216ea7746d2e1b33abea9bc1c

SHA256
3b667512e2dc899bc4e0d92628a981b4487b9423c6ae3804893a30c67a2de21c

SHA512
e7e647733b88c78b8bb6c1951780b2627e2b0b66dc2b29d257f2925d837936bd12eaa56b43c7d59ec663e81fa31ec50f4767de8ab1441c645c0890aec79a8d10

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