25d973eb5bb9f30c2f849928164269e735be628231eb257663921c338bc7579a

Analysis

max time kernel
141s
max time network
126s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05/04/2024, 19:38

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General

Target

25d973eb5bb9f30c2f849928164269e735be628231eb257663921c338bc7579a.exe
Size

70KB
MD5

7990179b94f9639b392ee66bc04c15bf
SHA1

f1d5c9aa5a52716040036c97ff2d799a6ebe49df
SHA256

25d973eb5bb9f30c2f849928164269e735be628231eb257663921c338bc7579a
SHA512

f6c26a1cb1156f7c92c9ca93f77fa6e021527935e559464518a85ece3840478d640686cd546a5b02ddb2f995bf198ea7f6236898f9a9832814d5424f02827d6a
SSDEEP

768:TrItKyw5WHXfQmjIiIk9ecAa0Mb96SyX1DLdRXXX9:Tr3Z5IfQmv81ar1yXtZz

Score

9^/10

evasion

Malware Config

Signatures

Detects Windows executables referencing non-Windows User-Agents 1 IoCs

resource	yara_rule
behavioral1/files/0x000800000001227d-2.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
484	attrib.exe

Deletes itself 1 IoCs

pid	Process
2780	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1608	iuyhost.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\iuyhost.exe	25d973eb5bb9f30c2f849928164269e735be628231eb257663921c338bc7579a.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	25d973eb5bb9f30c2f849928164269e735be628231eb257663921c338bc7579a.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	attrib.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2316	25d973eb5bb9f30c2f849928164269e735be628231eb257663921c338bc7579a.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 484	2316	25d973eb5bb9f30c2f849928164269e735be628231eb257663921c338bc7579a.exe	28
PID 2316 wrote to memory of 484	2316	25d973eb5bb9f30c2f849928164269e735be628231eb257663921c338bc7579a.exe	28
PID 2316 wrote to memory of 484	2316	25d973eb5bb9f30c2f849928164269e735be628231eb257663921c338bc7579a.exe	28
PID 2316 wrote to memory of 484	2316	25d973eb5bb9f30c2f849928164269e735be628231eb257663921c338bc7579a.exe	28
PID 2316 wrote to memory of 2780	2316	25d973eb5bb9f30c2f849928164269e735be628231eb257663921c338bc7579a.exe	31
PID 2316 wrote to memory of 2780	2316	25d973eb5bb9f30c2f849928164269e735be628231eb257663921c338bc7579a.exe	31
PID 2316 wrote to memory of 2780	2316	25d973eb5bb9f30c2f849928164269e735be628231eb257663921c338bc7579a.exe	31
PID 2316 wrote to memory of 2780	2316	25d973eb5bb9f30c2f849928164269e735be628231eb257663921c338bc7579a.exe	31

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
484	attrib.exe

C:\Users\Admin\AppData\Local\Temp\25d973eb5bb9f30c2f849928164269e735be628231eb257663921c338bc7579a.exe
"C:\Users\Admin\AppData\Local\Temp\25d973eb5bb9f30c2f849928164269e735be628231eb257663921c338bc7579a.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2316
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\iuyhost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - Views/modifies file attributes
  PID:484
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\25D973~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2780

C:\Windows\Debug\iuyhost.exe
C:\Windows\Debug\iuyhost.exe
1⤵
- Executes dropped EXE
PID:1608

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\Debug\iuyhost.exe

Filesize
70KB

MD5
dbb80b4c1e16c3dcc3ca9de374b04acb

SHA1
a3a644103b812743a11739aa140d589f1ff4258a

SHA256
3a240c78074cec0a55e163891f62185b9e18209c74754563588e5d160bdf3a9a

SHA512
e00c39906536a674410f7f56c1a4e543a47701fc9a55d5592337287d5beb63f7d9d8616e3d09c18bc5bf5355232b4b2e924a709a334f715e316eccffb69b593d

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads