965c03c1440a12d996905d6c365b4aac7ba463e5a7b3add65be68ec6af460993

Analysis

max time kernel
117s
max time network
120s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
24/08/2024, 01:46

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General

Target

virussign.exe
Size

133KB
MD5

7da884a3a469e63668849916c1099053
SHA1

13860d53a579f76427545e60eab870923065ec7f
SHA256

13cde81b212acc3314cf406e8b22bf641e7fde481365f982ebeac3bd8094c26e
SHA512

25a15d85cd8cb7ab96a6433a46bcf5e4e9388055290a730878b84a01b71d3a3167ac7f7f745942e1d729db87ea4d66a4b76f7cd3d6999bc2433c47272155824f
SSDEEP

3072:lRnLy8MWmJiv1inJRqxlffsSFNJz9SuaKC8Dr:lpZ9OJRyf/HIKC8n

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3044	Au_.exe

Loads dropped DLL 4 IoCs

pid	Process
2504	virussign.exe
3044	Au_.exe
3044	Au_.exe
3044	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	virussign.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Au_.exe

NSIS installer 1 IoCs

installer

resource	yara_rule
behavioral9/files/0x00050000000186e4-2.dat	nsis_installer_1

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3044	Au_.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 3044	2504	virussign.exe	30
PID 2504 wrote to memory of 3044	2504	virussign.exe	30
PID 2504 wrote to memory of 3044	2504	virussign.exe	30
PID 2504 wrote to memory of 3044	2504	virussign.exe	30
PID 2504 wrote to memory of 3044	2504	virussign.exe	30
PID 2504 wrote to memory of 3044	2504	virussign.exe	30
PID 2504 wrote to memory of 3044	2504	virussign.exe	30

C:\Users\Admin\AppData\Local\Temp\virussign.exe
"C:\Users\Admin\AppData\Local\Temp\virussign.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2504
- 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:3044

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
133KB

MD5
7da884a3a469e63668849916c1099053

SHA1
13860d53a579f76427545e60eab870923065ec7f

SHA256
13cde81b212acc3314cf406e8b22bf641e7fde481365f982ebeac3bd8094c26e

SHA512
25a15d85cd8cb7ab96a6433a46bcf5e4e9388055290a730878b84a01b71d3a3167ac7f7f745942e1d729db87ea4d66a4b76f7cd3d6999bc2433c47272155824f

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