bb73bbe07d46d3966584fd13599bbc223a31dd04a38a310065ae025654a6e2cb

Analysis

max time kernel
141s
max time network
123s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
29/01/2024, 12:39

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General

Target

bb73bbe07d46d3966584fd13599bbc223a31dd04a38a310065ae025654a6e2cb.exe
Size

195KB
MD5

3a48624e7f8e0969a04274a823284384
SHA1

e9028bf56516ecf397bc346a7791c082d229197e
SHA256

bb73bbe07d46d3966584fd13599bbc223a31dd04a38a310065ae025654a6e2cb
SHA512

4750125eafc76015b7e3d37d62032aa99c4326da423508e1556fa4aa406ca1dcf3659ef215f711c3511ca75b5d1a5e0b68c3e806d30b42c5b93fd3ae4621892a
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOQ:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXJ

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1800	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2408	iuyhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\iuyhost.exe	bb73bbe07d46d3966584fd13599bbc223a31dd04a38a310065ae025654a6e2cb.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	bb73bbe07d46d3966584fd13599bbc223a31dd04a38a310065ae025654a6e2cb.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	iuyhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	iuyhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1568	bb73bbe07d46d3966584fd13599bbc223a31dd04a38a310065ae025654a6e2cb.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1568 wrote to memory of 1800	1568	bb73bbe07d46d3966584fd13599bbc223a31dd04a38a310065ae025654a6e2cb.exe	29
PID 1568 wrote to memory of 1800	1568	bb73bbe07d46d3966584fd13599bbc223a31dd04a38a310065ae025654a6e2cb.exe	29
PID 1568 wrote to memory of 1800	1568	bb73bbe07d46d3966584fd13599bbc223a31dd04a38a310065ae025654a6e2cb.exe	29
PID 1568 wrote to memory of 1800	1568	bb73bbe07d46d3966584fd13599bbc223a31dd04a38a310065ae025654a6e2cb.exe	29

C:\Users\Admin\AppData\Local\Temp\bb73bbe07d46d3966584fd13599bbc223a31dd04a38a310065ae025654a6e2cb.exe
"C:\Users\Admin\AppData\Local\Temp\bb73bbe07d46d3966584fd13599bbc223a31dd04a38a310065ae025654a6e2cb.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1568
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\BB73BB~1.EXE > nul
  2⤵
  - Deletes itself
  PID:1800

C:\Windows\Debug\iuyhost.exe
C:\Windows\Debug\iuyhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:2408

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Replay Monitor

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Downloads

C:\Windows\debug\iuyhost.exe

Filesize
195KB

MD5
1ebb1fd8098a923076711037a2f6eba9

SHA1
cfa60e858af3df9d8796bc2153097867f873700f

SHA256
8118e890fc5411d9a765cc2169d40695dd48826dff80030977081f1d85c39f02

SHA512
7f77ec5a22a99b96639eb57d118aaabf03a8736e96912c3a2f463592c70a4e3c5c9b5787d79d5aaf9a1c5c5736778166d49bd2648d0c53c5ef67cba271743ddc

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