f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380

General

Target

f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380.exe
Size

631KB
MD5

90043c13ad9a6ca17b5ec85617c964dd
SHA1

8baadebcefbc250aa8a8bf55dbdaf83d9f7fc4fb
SHA256

f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380
SHA512

a8e98003c709c6ae110a1c5d9b74d5e3b76633eaf3d487b50fa7905f669097aa87dd53b6f769e20f79d2cf84c5bb8570c23e302fe2f09ed76f870742f9848890
SSDEEP

12288:z7c14hizuzg7rwYK78qdHcdfgdzrj1veK5EyNL4u7iWNk1cOI85:k6QzoYKiBQ3jEK3NLlvk1c

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
524	WindowsSecurityUpdate.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1032-55-0x0000000000400000-0x0000000000517000-memory.dmp	upx
behavioral1/memory/1032-59-0x0000000000400000-0x0000000000517000-memory.dmp	upx
behavioral1/memory/524-73-0x0000000000400000-0x0000000000517000-memory.dmp	upx
behavioral1/memory/524-74-0x0000000000400000-0x0000000000517000-memory.dmp	upx
behavioral1/memory/1032-75-0x0000000000400000-0x0000000000517000-memory.dmp	upx

Loads dropped DLL 6 IoCs

pid	Process
1032	f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380.exe
1032	f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380.exe
1032	f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380.exe
524	WindowsSecurityUpdate.exe
524	WindowsSecurityUpdate.exe
524	WindowsSecurityUpdate.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1032	f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: 33	2044	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	2044	AUDIODG.EXE
Token: 33	2044	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	2044	AUDIODG.EXE

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1032 wrote to memory of 524	1032	f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380.exe	29
PID 1032 wrote to memory of 524	1032	f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380.exe	29
PID 1032 wrote to memory of 524	1032	f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380.exe	29
PID 1032 wrote to memory of 524	1032	f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380.exe	29
PID 1032 wrote to memory of 524	1032	f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380.exe	29
PID 1032 wrote to memory of 524	1032	f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380.exe	29
PID 1032 wrote to memory of 524	1032	f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380.exe	29

C:\Users\Admin\AppData\Local\Temp\f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380.exe
"C:\Users\Admin\AppData\Local\Temp\f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1032
- C:\Users\Admin\AppData\Roaming\HfDRRR9D\WindowsSecurityUpdate.exe
  "C:\Users\Admin\AppData\Roaming\HfDRRR9D\WindowsSecurityUpdate.exe" -services
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:524

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x558
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2044

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\HfDRRR9D\WindowsSecurityUpdate.exe

Filesize
631KB

MD5
90043c13ad9a6ca17b5ec85617c964dd

SHA1
8baadebcefbc250aa8a8bf55dbdaf83d9f7fc4fb

SHA256
f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380

SHA512
a8e98003c709c6ae110a1c5d9b74d5e3b76633eaf3d487b50fa7905f669097aa87dd53b6f769e20f79d2cf84c5bb8570c23e302fe2f09ed76f870742f9848890

Download Submit
C:\Users\Admin\AppData\Roaming\HfDRRR9D\WindowsSecurityUpdate.exe

Filesize
631KB

MD5
90043c13ad9a6ca17b5ec85617c964dd

SHA1
8baadebcefbc250aa8a8bf55dbdaf83d9f7fc4fb

SHA256
f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380

SHA512
a8e98003c709c6ae110a1c5d9b74d5e3b76633eaf3d487b50fa7905f669097aa87dd53b6f769e20f79d2cf84c5bb8570c23e302fe2f09ed76f870742f9848890

Download Submit
\Users\Admin\AppData\Roaming\HfDRRR9D\WindowsSecurityUpdate.exe

Filesize
631KB

MD5
90043c13ad9a6ca17b5ec85617c964dd

SHA1
8baadebcefbc250aa8a8bf55dbdaf83d9f7fc4fb

SHA256
f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380

SHA512
a8e98003c709c6ae110a1c5d9b74d5e3b76633eaf3d487b50fa7905f669097aa87dd53b6f769e20f79d2cf84c5bb8570c23e302fe2f09ed76f870742f9848890

Download Submit
\Users\Admin\AppData\Roaming\HfDRRR9D\WindowsSecurityUpdate.exe

Filesize
631KB

MD5
90043c13ad9a6ca17b5ec85617c964dd

SHA1
8baadebcefbc250aa8a8bf55dbdaf83d9f7fc4fb

SHA256
f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380

SHA512
a8e98003c709c6ae110a1c5d9b74d5e3b76633eaf3d487b50fa7905f669097aa87dd53b6f769e20f79d2cf84c5bb8570c23e302fe2f09ed76f870742f9848890

Download Submit
\Users\Admin\AppData\Roaming\HfDRRR9D\WindowsSecurityUpdate.exe

Filesize
631KB

MD5
90043c13ad9a6ca17b5ec85617c964dd

SHA1
8baadebcefbc250aa8a8bf55dbdaf83d9f7fc4fb

SHA256
f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380

SHA512
a8e98003c709c6ae110a1c5d9b74d5e3b76633eaf3d487b50fa7905f669097aa87dd53b6f769e20f79d2cf84c5bb8570c23e302fe2f09ed76f870742f9848890

Download Submit
\Users\Admin\AppData\Roaming\HfDRRR9D\WindowsSecurityUpdate.exe

Filesize
631KB

MD5
90043c13ad9a6ca17b5ec85617c964dd

SHA1
8baadebcefbc250aa8a8bf55dbdaf83d9f7fc4fb

SHA256
f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380

SHA512
a8e98003c709c6ae110a1c5d9b74d5e3b76633eaf3d487b50fa7905f669097aa87dd53b6f769e20f79d2cf84c5bb8570c23e302fe2f09ed76f870742f9848890

Download Submit
\Users\Admin\AppData\Roaming\HfDRRR9D\WindowsSecurityUpdate.exe

Filesize
631KB

MD5
90043c13ad9a6ca17b5ec85617c964dd

SHA1
8baadebcefbc250aa8a8bf55dbdaf83d9f7fc4fb

SHA256
f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380

SHA512
a8e98003c709c6ae110a1c5d9b74d5e3b76633eaf3d487b50fa7905f669097aa87dd53b6f769e20f79d2cf84c5bb8570c23e302fe2f09ed76f870742f9848890

Download Submit
\Users\Admin\AppData\Roaming\HfDRRR9D\WindowsSecurityUpdate.exe

Filesize
631KB

MD5
90043c13ad9a6ca17b5ec85617c964dd

SHA1
8baadebcefbc250aa8a8bf55dbdaf83d9f7fc4fb

SHA256
f4b935edaaea4ebd3a681e7a9e619765abb46af0c218918b94eba276df66c380

SHA512
a8e98003c709c6ae110a1c5d9b74d5e3b76633eaf3d487b50fa7905f669097aa87dd53b6f769e20f79d2cf84c5bb8570c23e302fe2f09ed76f870742f9848890

Download Submit
memory/524-63-0x0000000000000000-mapping.dmp

Download
memory/524-73-0x0000000000400000-0x0000000000517000-memory.dmp

Filesize
1.1MB

Download
memory/524-74-0x0000000000400000-0x0000000000517000-memory.dmp

Filesize
1.1MB

Download
memory/1032-54-0x0000000000400000-0x0000000000517000-memory.dmp

Filesize
1.1MB

Download
memory/1032-59-0x0000000000400000-0x0000000000517000-memory.dmp

Filesize
1.1MB

Download
memory/1032-58-0x0000000075501000-0x0000000075503000-memory.dmp

Filesize
8KB

Download
memory/1032-57-0x0000000002790000-0x00000000028A7000-memory.dmp

Filesize
1.1MB

Download
memory/1032-55-0x0000000000400000-0x0000000000517000-memory.dmp

Filesize
1.1MB

Download
memory/1032-75-0x0000000000400000-0x0000000000517000-memory.dmp

Filesize
1.1MB

Download

Analysis

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