a8982034b8745ca1dc3b8816b16961bf4e996c911c6411bca8530d8aea7e0610

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
02-09-2024 20:23

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General

Target

uninstall.exe
Size

59KB
MD5

e4f3ddc1ac94e6703ec7a96c52dc6d53
SHA1

316416c096a9d4a3b9c38e5fb3a5939f0f726df4
SHA256

82d45f62debed77da4c768a6f827461be18852ea376928733be79539b9d3ebb4
SHA512

f707328f73f0925395ff3fc5610bc88ea124488680dffa4d8f83e2e43b9c78cd66ded113720d0dbe1e007d8bc88c0168224ad3da8a5599c4d645acb002a6e063
SSDEEP

1536:1LXB65939tY6HBg4sXJpE90eaApbpzUR0B9u:1Lk395hYXJpfWplYuB8

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2956	Au_.exe

Loads dropped DLL 1 IoCs

pid	Process
1952	uninstall.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uninstall.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Au_.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral23/files/0x0005000000019c53-2.dat	nsis_installer_1
behavioral23/files/0x0005000000019c53-2.dat	nsis_installer_2

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2956	Au_.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1952 wrote to memory of 2956	1952	uninstall.exe	30
PID 1952 wrote to memory of 2956	1952	uninstall.exe	30
PID 1952 wrote to memory of 2956	1952	uninstall.exe	30
PID 1952 wrote to memory of 2956	1952	uninstall.exe	30

C:\Users\Admin\AppData\Local\Temp\uninstall.exe
"C:\Users\Admin\AppData\Local\Temp\uninstall.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1952
- C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2956

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

Filesize
59KB

MD5
e4f3ddc1ac94e6703ec7a96c52dc6d53

SHA1
316416c096a9d4a3b9c38e5fb3a5939f0f726df4

SHA256
82d45f62debed77da4c768a6f827461be18852ea376928733be79539b9d3ebb4

SHA512
f707328f73f0925395ff3fc5610bc88ea124488680dffa4d8f83e2e43b9c78cd66ded113720d0dbe1e007d8bc88c0168224ad3da8a5599c4d645acb002a6e063

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