91ff99594f87c113f6087359093099cdbbc1fc19b1a03bee9b52ed86a47c2835

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
11-08-2024 11:20

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General

Target

uninstall.exe
Size

38KB
MD5

544bfa470a667ecef7d6c7a655d50148
SHA1

96201fa4bf973c0b9592883e9fa7dc7ad2a8111a
SHA256

599b7a683d1de7c886efc0561e05a0579caac67ee14cdb81f8494959ad2565e1
SHA512

d866678ce6f9cd87ce144c65fe31f721e7ca7b157df89592f956fc2d2bc129d58730e0e3e0073fffcc274d66448f1a90dddb160d3d24576e812d82ab6f813a27
SSDEEP

768:c4wO7XBz+5Qm3W0tYdrQZHV4EWuWEUOg4jjfS3XJ3Tlt:PLXB65939tY6HBg4sXJ3Tlt

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2104	Au_.exe

Loads dropped DLL 1 IoCs

pid	Process
2624	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
behavioral27/files/0x00050000000193e6-2.dat	nsis_installer_1
behavioral27/files/0x00050000000193e6-2.dat	nsis_installer_2

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2104	Au_.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2624 wrote to memory of 2104	2624	uninstall.exe	30
PID 2624 wrote to memory of 2104	2624	uninstall.exe	30
PID 2624 wrote to memory of 2104	2624	uninstall.exe	30
PID 2624 wrote to memory of 2104	2624	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:2624
- 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:2104

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
38KB

MD5
544bfa470a667ecef7d6c7a655d50148

SHA1
96201fa4bf973c0b9592883e9fa7dc7ad2a8111a

SHA256
599b7a683d1de7c886efc0561e05a0579caac67ee14cdb81f8494959ad2565e1

SHA512
d866678ce6f9cd87ce144c65fe31f721e7ca7b157df89592f956fc2d2bc129d58730e0e3e0073fffcc274d66448f1a90dddb160d3d24576e812d82ab6f813a27

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