1c23e8cc65f7d2e330f3b4021ef691397beda36b6ab9cba7bea091b0b6f30565

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07/09/2024, 06:19

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General

Target

uninst.exe
Size

97KB
MD5

4d6600cbaead3a7a961a12d737d1d99f
SHA1

fbc5d33946f07ad2479bedfbe04645736187ffe9
SHA256

cb967f03ab5e8b6e7c9898e57cd43250ab66a9233b47419993b3985cc3376953
SHA512

be5e95d4adbf4d9a41c8cf5b763aebe088354f4529a3a7761af7ea094deaa5b0386474b55b37a8a22db6f7f4ea33aadfe3cf467e1ae14c359b7dfd8120615310
SSDEEP

1536:kxY+TZkz1GxGTff7MbS0DymJ5AyiNSLn1v+YbCcOmqphxRKhQBdTFQe3X:SYL0xqfjyDymJRxnp+YbAEhOuEX

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2064	Au_.exe

Loads dropped DLL 1 IoCs

pid	Process
2100	uninst.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	uninst.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Au_.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral19/files/0x0005000000019334-2.dat	nsis_installer_1
behavioral19/files/0x0005000000019334-2.dat	nsis_installer_2

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 2064	2100	uninst.exe	31
PID 2100 wrote to memory of 2064	2100	uninst.exe	31
PID 2100 wrote to memory of 2064	2100	uninst.exe	31
PID 2100 wrote to memory of 2064	2100	uninst.exe	31

C:\Users\Admin\AppData\Local\Temp\uninst.exe
"C:\Users\Admin\AppData\Local\Temp\uninst.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2100
- 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
  PID:2064

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
97KB

MD5
4d6600cbaead3a7a961a12d737d1d99f

SHA1
fbc5d33946f07ad2479bedfbe04645736187ffe9

SHA256
cb967f03ab5e8b6e7c9898e57cd43250ab66a9233b47419993b3985cc3376953

SHA512
be5e95d4adbf4d9a41c8cf5b763aebe088354f4529a3a7761af7ea094deaa5b0386474b55b37a8a22db6f7f4ea33aadfe3cf467e1ae14c359b7dfd8120615310

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