2b668eb82af01cf460d19bec4f12f01d1bbd8ed1ac5250944ce860ca4e874bc1

Analysis

max time kernel
141s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
08/06/2024, 20:46

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General

Target

2b668eb82af01cf460d19bec4f12f01d1bbd8ed1ac5250944ce860ca4e874bc1.exe
Size

66KB
MD5

0340233920cee246c2b957caf2cac04b
SHA1

d0ab9b6f03a195661eb571bdfbd8596266659f12
SHA256

2b668eb82af01cf460d19bec4f12f01d1bbd8ed1ac5250944ce860ca4e874bc1
SHA512

2bb4deed32a5bc748a37d4ac6bc373ee158ea2dd08fdec2bdb97c566cf8f85e3aa230b2191707580e38b6c931ad630824d5521bbfb229a1c65cbe033a38bcfcd
SSDEEP

768:ZrItKyw5WHXfQIhIiIk9ecAaVPD96KyX6N:Zr3Z5IfQIR81ad5yX6N

Score

9^/10

evasion

Malware Config

Signatures

Detects Windows executables referencing non-Windows User-Agents 5 IoCs

resource	yara_rule
behavioral1/memory/2296-0-0x0000000000400000-0x0000000000411000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/files/0x00070000000122cd-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2128-5-0x0000000000400000-0x0000000000411000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2296-6-0x0000000000400000-0x0000000000411000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2128-7-0x0000000000400000-0x0000000000411000-memory.dmp	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
300	attrib.exe

Deletes itself 1 IoCs

pid	Process
2444	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2128	iuyhost.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\iuyhost.exe	attrib.exe
File created	C:\Windows\Debug\iuyhost.exe	2b668eb82af01cf460d19bec4f12f01d1bbd8ed1ac5250944ce860ca4e874bc1.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	2b668eb82af01cf460d19bec4f12f01d1bbd8ed1ac5250944ce860ca4e874bc1.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	2296	2b668eb82af01cf460d19bec4f12f01d1bbd8ed1ac5250944ce860ca4e874bc1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 300	2296	2b668eb82af01cf460d19bec4f12f01d1bbd8ed1ac5250944ce860ca4e874bc1.exe	28
PID 2296 wrote to memory of 300	2296	2b668eb82af01cf460d19bec4f12f01d1bbd8ed1ac5250944ce860ca4e874bc1.exe	28
PID 2296 wrote to memory of 300	2296	2b668eb82af01cf460d19bec4f12f01d1bbd8ed1ac5250944ce860ca4e874bc1.exe	28
PID 2296 wrote to memory of 300	2296	2b668eb82af01cf460d19bec4f12f01d1bbd8ed1ac5250944ce860ca4e874bc1.exe	28
PID 2296 wrote to memory of 2444	2296	2b668eb82af01cf460d19bec4f12f01d1bbd8ed1ac5250944ce860ca4e874bc1.exe	31
PID 2296 wrote to memory of 2444	2296	2b668eb82af01cf460d19bec4f12f01d1bbd8ed1ac5250944ce860ca4e874bc1.exe	31
PID 2296 wrote to memory of 2444	2296	2b668eb82af01cf460d19bec4f12f01d1bbd8ed1ac5250944ce860ca4e874bc1.exe	31
PID 2296 wrote to memory of 2444	2296	2b668eb82af01cf460d19bec4f12f01d1bbd8ed1ac5250944ce860ca4e874bc1.exe	31

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
300	attrib.exe

C:\Users\Admin\AppData\Local\Temp\2b668eb82af01cf460d19bec4f12f01d1bbd8ed1ac5250944ce860ca4e874bc1.exe
"C:\Users\Admin\AppData\Local\Temp\2b668eb82af01cf460d19bec4f12f01d1bbd8ed1ac5250944ce860ca4e874bc1.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2296
- 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:300
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\2B668E~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2444

C:\Windows\Debug\iuyhost.exe
C:\Windows\Debug\iuyhost.exe
1⤵
- Executes dropped EXE
PID:2128

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
66KB

MD5
1fbf57f0849ee276cbadf166c92afd28

SHA1
087ed505d02e1347d13b587e1019d7596bfa53f0

SHA256
9ca662985643b698ed109c3436c8862f9367c18e943e9311a64df30385c73e23

SHA512
e9ad4527ea36a649e1386b2c6e0bb78d45abc3327e029b98b61cba0f17e6c79d5533db1b8444a36397dcae60b197d6d992c8a84cf1b2070b7183b4ff9ed7d2f8

Download Submit
memory/2128-5-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2128-7-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2296-0-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/2296-6-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads