8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2

General

Target

8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2.exe
Size

336KB
MD5

99f74c9cda2185fe716cb7d670e706f0
SHA1

9a70cb8e0575341374ea39b3f7197156c5baf681
SHA256

8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2
SHA512

c3e0b2fbc031dfc1ae522003b8dfc962972526f5cd3b5bd90a07653faa2feaa6686c344f598700ebf99897f87267e93c49ba63670121798156700c7929e375df
SSDEEP

6144:Gvnm3YkDJaCajEyQH3LGa8J75guUsvcLc7sxnWWdqZW83Ko1TLC5KvTBsK:Gvnm3BDJtOIF8ZEQ0dqZtauTL0ATBsK

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1576	whudm.exe

Deletes itself 1 IoCs

pid	Process
768	cmd.exe

Loads dropped DLL 3 IoCs

pid	Process
768	cmd.exe
768	cmd.exe
1576	whudm.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
112	taskkill.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1212	PING.EXE

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	112	taskkill.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe
1576	whudm.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 960 wrote to memory of 768	960	8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2.exe	28
PID 960 wrote to memory of 768	960	8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2.exe	28
PID 960 wrote to memory of 768	960	8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2.exe	28
PID 960 wrote to memory of 768	960	8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2.exe	28
PID 768 wrote to memory of 112	768	cmd.exe	30
PID 768 wrote to memory of 112	768	cmd.exe	30
PID 768 wrote to memory of 112	768	cmd.exe	30
PID 768 wrote to memory of 112	768	cmd.exe	30
PID 768 wrote to memory of 1212	768	cmd.exe	32
PID 768 wrote to memory of 1212	768	cmd.exe	32
PID 768 wrote to memory of 1212	768	cmd.exe	32
PID 768 wrote to memory of 1212	768	cmd.exe	32
PID 768 wrote to memory of 1576	768	cmd.exe	33
PID 768 wrote to memory of 1576	768	cmd.exe	33
PID 768 wrote to memory of 1576	768	cmd.exe	33
PID 768 wrote to memory of 1576	768	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2.exe
"C:\Users\Admin\AppData\Local\Temp\8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /f /pid 960 & ping -n 3 127.1 & del /f /q "C:\Users\Admin\AppData\Local\Temp\8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2.exe" & start C:\Users\Admin\AppData\Local\whudm.exe -f
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:768
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /f /pid 960
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:112
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 3 127.1
    3⤵
    - Runs ping.exe
    PID:1212
- - C:\Users\Admin\AppData\Local\whudm.exe
    C:\Users\Admin\AppData\Local\whudm.exe -f
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    PID:1576

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\whudm.exe

Filesize
336KB

MD5
99f74c9cda2185fe716cb7d670e706f0

SHA1
9a70cb8e0575341374ea39b3f7197156c5baf681

SHA256
8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2

SHA512
c3e0b2fbc031dfc1ae522003b8dfc962972526f5cd3b5bd90a07653faa2feaa6686c344f598700ebf99897f87267e93c49ba63670121798156700c7929e375df

Download Submit
C:\Users\Admin\AppData\Local\whudm.exe

Filesize
336KB

MD5
99f74c9cda2185fe716cb7d670e706f0

SHA1
9a70cb8e0575341374ea39b3f7197156c5baf681

SHA256
8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2

SHA512
c3e0b2fbc031dfc1ae522003b8dfc962972526f5cd3b5bd90a07653faa2feaa6686c344f598700ebf99897f87267e93c49ba63670121798156700c7929e375df

Download Submit
\Users\Admin\AppData\Local\whudm.exe

Filesize
336KB

MD5
99f74c9cda2185fe716cb7d670e706f0

SHA1
9a70cb8e0575341374ea39b3f7197156c5baf681

SHA256
8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2

SHA512
c3e0b2fbc031dfc1ae522003b8dfc962972526f5cd3b5bd90a07653faa2feaa6686c344f598700ebf99897f87267e93c49ba63670121798156700c7929e375df

Download Submit
\Users\Admin\AppData\Local\whudm.exe

Filesize
336KB

MD5
99f74c9cda2185fe716cb7d670e706f0

SHA1
9a70cb8e0575341374ea39b3f7197156c5baf681

SHA256
8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2

SHA512
c3e0b2fbc031dfc1ae522003b8dfc962972526f5cd3b5bd90a07653faa2feaa6686c344f598700ebf99897f87267e93c49ba63670121798156700c7929e375df

Download Submit
\Users\Admin\AppData\Local\whudm.exe

Filesize
336KB

MD5
99f74c9cda2185fe716cb7d670e706f0

SHA1
9a70cb8e0575341374ea39b3f7197156c5baf681

SHA256
8981751fa2c63c7cba7bc7c38c462df09e2acc54a7bb32afb03e873cde11daa2

SHA512
c3e0b2fbc031dfc1ae522003b8dfc962972526f5cd3b5bd90a07653faa2feaa6686c344f598700ebf99897f87267e93c49ba63670121798156700c7929e375df

Download Submit
memory/960-59-0x0000000001000000-0x00000000010A9000-memory.dmp

Filesize
676KB

Download
memory/960-57-0x0000000001000000-0x00000000010A9000-memory.dmp

Filesize
676KB

Download
memory/960-56-0x0000000001000000-0x00000000010A9000-memory.dmp

Filesize
676KB

Download
memory/960-55-0x0000000075D01000-0x0000000075D03000-memory.dmp

Filesize
8KB

Download
memory/960-54-0x0000000000260000-0x0000000000263000-memory.dmp

Filesize
12KB

Download
memory/1576-69-0x0000000001000000-0x00000000010A9000-memory.dmp

Filesize
676KB

Download
memory/1576-70-0x0000000001000000-0x00000000010A9000-memory.dmp

Filesize
676KB

Download

Analysis

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