591a37517539a001143870761f3da71087556c5f3450bf929c26ac12ea7427f6

Analysis

max time kernel
120s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-10-2024 07:57

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General

Target

uninstall.exe
Size

285KB
MD5

04d45b26661ce63e65f3e2d15bc8c249
SHA1

ac16cf8e55207d101adc244b7014b4231ef01716
SHA256

c3edb1a4223e6f3dd2483545d41f66a531c4f95b4fbf7dedd6b413cdf7e30c57
SHA512

424be5f7d1363373ef3623fd66ff845b8e130aae1a2af5a5eb96f0d6873bc4c0359944cf179921fd0e3652f6f3f798eed1c7884126fbd5c3ef5405ed430a5ce3
SSDEEP

6144:Ee34MspeZH+zpyuuz6GZkDOJ/7OafSH5KmrWym09x15:pweZHkwuPikQ7lKH5p5H9x15

Score

7^/10

discovery spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2796	Au_.exe

Loads dropped DLL 2 IoCs

pid	Process
1364	uninstall.exe
2796	Au_.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
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
behavioral13/files/0x0005000000018f40-2.dat	nsis_installer_1
behavioral13/files/0x0005000000018f40-2.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1364 wrote to memory of 2796	1364	uninstall.exe	30
PID 1364 wrote to memory of 2796	1364	uninstall.exe	30
PID 1364 wrote to memory of 2796	1364	uninstall.exe	30
PID 1364 wrote to memory of 2796	1364	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:1364
- 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
  PID:2796

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nso5DF9.tmp\aminsis.dll

Filesize
559KB

MD5
51ba1095f0ae45a2d444bea506cb9ad4

SHA1
038a5d53d055a6d440bd2c8864c2f51db206c5e5

SHA256
b620091bf9973e807e12155d2247a6d233b5d13ec38c426675470ab4b26f0539

SHA512
f5fe2dd0f19bcaab47540ceedbec71f7f7c5b833c8772c097594c458e5f1101fe9feb849812b65c175055f71dfb13f11c4ad94fef42cd66f247413e453de3361

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

Filesize
285KB

MD5
04d45b26661ce63e65f3e2d15bc8c249

SHA1
ac16cf8e55207d101adc244b7014b4231ef01716

SHA256
c3edb1a4223e6f3dd2483545d41f66a531c4f95b4fbf7dedd6b413cdf7e30c57

SHA512
424be5f7d1363373ef3623fd66ff845b8e130aae1a2af5a5eb96f0d6873bc4c0359944cf179921fd0e3652f6f3f798eed1c7884126fbd5c3ef5405ed430a5ce3

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