d54ebc19e986fb1fbdb6ae33eff1ec6f65f9b9a6bb83d1e03954526379217cd1

Analysis

max time kernel
95s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2022, 07:00

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General

Target
STP09876546700-098765..PDF..exe
Size 597KB
Sample221003-hsnvdscdb6
SHA256 d54ebc19e986fb1fbdb6ae33eff1ec6f65f9b9a6bb83d1e03954526379217cd1
MD5 2bff9d309fb2e73e5228937a4838dd79
SHA1 946d162631de9d4a9cca53f22c600abedd226230
SHA512 d9f7e09b0288121df00cb104b261fb13fa2792e588d4da4f9b71c39102bc415d0395552e3252edcb7cc2d307c74fb6e9e3fd2bb75f310c6e1c915e6e62ef210b
SSDEEP 12288:eToPWBv/cpGrU3yDgw5GNwQjM70BVvKy9GktNBT4:eTbBv5rU8v5GNfg70B1ZBU
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3816	hmyskmzxwe.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	STP09876546700-098765..PDF..exe

Loads dropped DLL 1 IoCs

pid	Process
4212	hmyskmzxwe.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3816 set thread context of 4212	3816	hmyskmzxwe.exe	83

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
2900	3816	WerFault.exe	81

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4212	hmyskmzxwe.exe
4212	hmyskmzxwe.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4752 wrote to memory of 3816	4752	STP09876546700-098765..PDF..exe	81
PID 4752 wrote to memory of 3816	4752	STP09876546700-098765..PDF..exe	81
PID 4752 wrote to memory of 3816	4752	STP09876546700-098765..PDF..exe	81
PID 3816 wrote to memory of 4212	3816	hmyskmzxwe.exe	83
PID 3816 wrote to memory of 4212	3816	hmyskmzxwe.exe	83
PID 3816 wrote to memory of 4212	3816	hmyskmzxwe.exe	83
PID 3816 wrote to memory of 4212	3816	hmyskmzxwe.exe	83

C:\Users\Admin\AppData\Local\Temp\STP09876546700-098765..PDF..exe
"C:\Users\Admin\AppData\Local\Temp\STP09876546700-098765..PDF..exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4752
- C:\Users\Admin\AppData\Local\Temp\hmyskmzxwe.exe
  "C:\Users\Admin\AppData\Local\Temp\hmyskmzxwe.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:3816
- - C:\Users\Admin\AppData\Local\Temp\hmyskmzxwe.exe
    "C:\Users\Admin\AppData\Local\Temp\hmyskmzxwe.exe"
    3⤵
    - Loads dropped DLL
    - Suspicious use of SetWindowsHookEx
    PID:4212
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3816 -s 600
    3⤵
    - Program crash
    PID:2900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3816 -ip 3816
1⤵
PID:2376

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

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Downloads

hmyskmzxwe.exe

Path C:\Users\Admin\AppData\Local\Temp\hmyskmzxwe.exe
Size 58KB
SHA256 140ae8c1826f196781178b3d5f353a872c15bd74fb787adf0dd06db930684767
MD5 fb6bb0407749a22962c07cb158cc9277
SHA1 7d52ff68549c30282580608b64a4c86013243819
SHA512 48af4fef151dd49faeeca28c946d2212a50b5f855ab15f438c9f85730731c25947906c259397902a02cd11511583aeefb7fd41b373a1eceb1b4f57ac63fbc2fd
SSDEEP 1536:bsi7nkgOfVKPyOrjK3rXMArAMXQ10Xes5:bXgZPOrW3jdAV0Xv
MD5 SHA1 SHA512 SSDEEP

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hmyskmzxwe.exe

Path C:\Users\Admin\AppData\Local\Temp\hmyskmzxwe.exe
Size 58KB
SHA256 140ae8c1826f196781178b3d5f353a872c15bd74fb787adf0dd06db930684767
MD5 fb6bb0407749a22962c07cb158cc9277
SHA1 7d52ff68549c30282580608b64a4c86013243819
SHA512 48af4fef151dd49faeeca28c946d2212a50b5f855ab15f438c9f85730731c25947906c259397902a02cd11511583aeefb7fd41b373a1eceb1b4f57ac63fbc2fd
SSDEEP 1536:bsi7nkgOfVKPyOrjK3rXMArAMXQ10Xes5:bXgZPOrW3jdAV0Xv
MD5 SHA1 SHA512 SSDEEP

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hmyskmzxwe.exe

Path C:\Users\Admin\AppData\Local\Temp\hmyskmzxwe.exe
Size 58KB
SHA256 140ae8c1826f196781178b3d5f353a872c15bd74fb787adf0dd06db930684767
MD5 fb6bb0407749a22962c07cb158cc9277
SHA1 7d52ff68549c30282580608b64a4c86013243819
SHA512 48af4fef151dd49faeeca28c946d2212a50b5f855ab15f438c9f85730731c25947906c259397902a02cd11511583aeefb7fd41b373a1eceb1b4f57ac63fbc2fd
SSDEEP 1536:bsi7nkgOfVKPyOrjK3rXMArAMXQ10Xes5:bXgZPOrW3jdAV0Xv
MD5 SHA1 SHA512 SSDEEP

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uolcb.uzp

Path C:\Users\Admin\AppData\Local\Temp\uolcb.uzp
Size 4KB
SHA256 d86831186c9e965338ccff30fbe5756f081f742dfe7667db62a2de3736bd007f
MD5 4f6f18f33e0c08bb64887a9c6241d853
SHA1 9823359df5125caa5f0e9e4a302990a057b77645
SHA512 a61b96521ca09eb1724934ec48a9313a170871d81953517a2879ee80013152c02704cd65a3dbb02f7479b5ac5658c83d70ba79a4fba732d9343f80a0a17a7a41
SSDEEP 96:GgLP2z9M2NOTfBIDDywrAUat49HJv6oMWq4sTcDa:TP2K2NQfB2ywrZa8HJwWq4q7
MD5 SHA1 SHA512 SSDEEP

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wzmggu.n

Path C:\Users\Admin\AppData\Local\Temp\wzmggu.n
Size 400KB
SHA256 dd4c75eb5c8ee4802c0936ee19fbdc92d10484e01682cdba3055599de674739f
MD5 f4ed458e87d898f55d353107e0b93820
SHA1 8628a071962db9f86a843904c65c68bc2d6c1120
SHA512 41d4d91ee92d2316996d8193573009500bea67b923843bb4ff504ab9fe4d4d954de240482ecf4dccafb2ceadc3c0d5a4706b59a98fdee9b24c7fd554db2c9330
SSDEEP 6144:jW4bwJYbtdI7zoSxYPHs99EWV4bdr5UG+r681zWrane2etbmjnAD9XJU:SbJGNSxprEBbdyG+r68HstCjnZ
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/4212-142-0x0000000000400000-0x000000000043E000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads