1257eb42368501130beff8430eb2ddfbf957838f94b1588d857c4ce17040c89c

Analysis

max time kernel
117s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-10-2024 15:07

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

uninstall.exe
Size

117KB
MD5

6ee2d080335ebf6fbf117fd0991cf7a5
SHA1

71d5bb5bd498cdd7412df66c0b87a270d3e334bb
SHA256

e96a352c41770da58451ceeac5d1427e171f584d2253032d9e53f2321634ecd6
SHA512

6b7f21a2076fe79832fb7801c3cafbea5c2984e4ae5546725063fdec8eeeb76426a8acfc706ad6aa1938e28b45ce1f88c7b0d23d2f6b03794bc146796dbc1f3c
SSDEEP

3072:811Z4TOoD2mJF6fxdvbOgCVuKgECeEqG9hBsfUQsNzQO:89/M6zDQnShBsNsNR

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2176	Au_.exe

Loads dropped DLL 5 IoCs

pid	Process
1984	uninstall.exe
2176	Au_.exe
2176	Au_.exe
2176	Au_.exe
2176	Au_.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 1 IoCs

installer

resource	yara_rule
behavioral19/files/0x000d000000018683-2.dat	nsis_installer_1

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2176	Au_.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1984 wrote to memory of 2176	1984	uninstall.exe	30
PID 1984 wrote to memory of 2176	1984	uninstall.exe	30
PID 1984 wrote to memory of 2176	1984	uninstall.exe	30
PID 1984 wrote to memory of 2176	1984	uninstall.exe	30
PID 1984 wrote to memory of 2176	1984	uninstall.exe	30
PID 1984 wrote to memory of 2176	1984	uninstall.exe	30
PID 1984 wrote to memory of 2176	1984	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:1984
- 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
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2176

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\nst8B40.tmp\ioSpecial.ini

Filesize
571B

MD5
4d5ead47c4f4df32d0ed32e4355d7bf8

SHA1
49e5a62d4611d99898745d6ed5de7b014cbd7a50

SHA256
1fd7096aeaa4243c1d22bab5bf29818ea68225b8b91e6333b50a9a48856cc526

SHA512
bc1d8a7aaf1fc43c25e49ed32e7862dde6caa769cfcc7b8554a4717a0361ad02bf12e7fbc0f22cf6ff0253d8398435bbc4ca9771d6827557b570624a67980643

Download Submit
C:\Users\Admin\AppData\Local\Temp\nst8B40.tmp\ioSpecial.ini

Filesize
610B

MD5
56b1a8aa43b0d51724abb0464907dc3c

SHA1
d084b02f74020ab50d8aecca3a4599c6485ad785

SHA256
bc4ea63d978351482403a49ddfc589e7003ff34ffd34867884268026d6c9063e

SHA512
4bac8f830d24e2c2c7a9116fd99634918d3cbfb866ecb229f1b14377b4cacee4e5f18a273ea84cbb150e0246404eb0602a6b5646a193c6021c132a1e58859db0

Download Submit
\Users\Admin\AppData\Local\Temp\nst8B40.tmp\InstallOptions.dll

Filesize
13KB

MD5
d765c492c21689e3d9d61634371fd861

SHA1
ac200933671ae52c9d5544d0e2e8e9144d286c83

SHA256
551e6042dd494ea01549555ffc194ab9729da09058ec714eb368dd06642c9bbc

SHA512
9919a9e848c8f1e26c75d0d29207571e4b86a4140bd554743d2c1f8bd7f386fe4919345b163d89a5d907fb165e435ba0ac5f6b1101713636141f156a420e2e0f

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

Filesize
117KB

MD5
6ee2d080335ebf6fbf117fd0991cf7a5

SHA1
71d5bb5bd498cdd7412df66c0b87a270d3e334bb

SHA256
e96a352c41770da58451ceeac5d1427e171f584d2253032d9e53f2321634ecd6

SHA512
6b7f21a2076fe79832fb7801c3cafbea5c2984e4ae5546725063fdec8eeeb76426a8acfc706ad6aa1938e28b45ce1f88c7b0d23d2f6b03794bc146796dbc1f3c

Download Submit