12883a6b74728f3b82cba270d64dd5e07c3ae8abf9a32c95926a20514f1db715

Analysis

max time kernel
141s
max time network
127s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
03-10-2023 10:20

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General

Target

12883a6b74728f3b82cba270d64dd5e07c3ae8abf9a32c95926a20514f1db715.exe
Size

198KB
MD5

8eaad91c1a74feb6626cfc564986a02f
SHA1

f8b705bfa70f0eb9d2cda92c6727b772af5361a4
SHA256

12883a6b74728f3b82cba270d64dd5e07c3ae8abf9a32c95926a20514f1db715
SHA512

8f6e16992730b516e3aef3fc451fefc1de26709a7e451a4c58f2dee620cf58f6a5019e973b86d95bc1853ca139ea97f95112047f64717f14c51c28e8f73965ae
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOc:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXt

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2236	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1208	iuyhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\iuyhost.exe	12883a6b74728f3b82cba270d64dd5e07c3ae8abf9a32c95926a20514f1db715.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	12883a6b74728f3b82cba270d64dd5e07c3ae8abf9a32c95926a20514f1db715.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	2356	12883a6b74728f3b82cba270d64dd5e07c3ae8abf9a32c95926a20514f1db715.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 2236	2356	12883a6b74728f3b82cba270d64dd5e07c3ae8abf9a32c95926a20514f1db715.exe	29
PID 2356 wrote to memory of 2236	2356	12883a6b74728f3b82cba270d64dd5e07c3ae8abf9a32c95926a20514f1db715.exe	29
PID 2356 wrote to memory of 2236	2356	12883a6b74728f3b82cba270d64dd5e07c3ae8abf9a32c95926a20514f1db715.exe	29
PID 2356 wrote to memory of 2236	2356	12883a6b74728f3b82cba270d64dd5e07c3ae8abf9a32c95926a20514f1db715.exe	29

C:\Users\Admin\AppData\Local\Temp\12883a6b74728f3b82cba270d64dd5e07c3ae8abf9a32c95926a20514f1db715.exe
"C:\Users\Admin\AppData\Local\Temp\12883a6b74728f3b82cba270d64dd5e07c3ae8abf9a32c95926a20514f1db715.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\12883A~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2236

C:\Windows\Debug\iuyhost.exe
C:\Windows\Debug\iuyhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:1208

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
198KB

MD5
a7772ec7f03d35f90f1ba035ecff559d

SHA1
2d239c3a5b20612584b0ecc1d1700d95a00f5568

SHA256
68b7d35af6b815274c5854550c16878eb4b90b335e23b1b8941e702378c47616

SHA512
30ddb9bda13f018f7e2ac45355efa2d150567944f41aafda7f55eed07c5f057b301af60d0cf61cdab0b1f80514c58e8588501367582124b4272fd1efc0771c64

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