7fedcec3a38dec8650ae2f64271b19c01372881ce83f1fe4597f85b26c4a0732

Analysis

max time kernel
92s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07-12-2024 02:55

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General

Target

$R0/Uninstall NSIS.exe
Size

296KB
MD5

9a606f191ba036a232b5d09aead537c4
SHA1

f4bded6b73c3cb67e20cc2480c681bd67e03d29a
SHA256

0898c038d2c97ec8646ab4cfd783d7c46e2ec2774375065b5c75bf3d702517fb
SHA512

ed1d039b7e8a0b76872caa1edc52ffe9dcb0c697e2e249a7c52072c1dd626e48ba5fd3c16c2156af145729f2dd39836c12678e76bd78623ecba5a8982451a1b6
SSDEEP

3072:Nn77v00hEoDEtauPnig6AbTXFif6lxCHaH2tvhOEA1RJCir86SrSrv6Ia3W:N740I/ig9XFifyes2t0EyL+yaG

Score

7^/10

discovery

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	Un_A.exe

Executes dropped EXE 1 IoCs

pid	Process
1872	Un_A.exe

Loads dropped DLL 4 IoCs

pid	Process
1872	Un_A.exe
1872	Un_A.exe
1872	Un_A.exe
1872	Un_A.exe

Enumerates processes with tasklist 1 TTPs 1 IoCs

discovery

Process Discovery

T1057

pid	Process
3688	tasklist.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 5 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	find.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasklist.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Uninstall NSIS.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Un_A.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1872	Un_A.exe
1872	Un_A.exe
3688	tasklist.exe
3688	tasklist.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3688	tasklist.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 1872	1924	Uninstall NSIS.exe	83
PID 1924 wrote to memory of 1872	1924	Uninstall NSIS.exe	83
PID 1924 wrote to memory of 1872	1924	Uninstall NSIS.exe	83
PID 1872 wrote to memory of 1468	1872	Un_A.exe	85
PID 1872 wrote to memory of 1468	1872	Un_A.exe	85
PID 1872 wrote to memory of 1468	1872	Un_A.exe	85
PID 1468 wrote to memory of 3688	1468	cmd.exe	87
PID 1468 wrote to memory of 3688	1468	cmd.exe	87
PID 1468 wrote to memory of 3688	1468	cmd.exe	87
PID 1468 wrote to memory of 1784	1468	cmd.exe	88
PID 1468 wrote to memory of 1784	1468	cmd.exe	88
PID 1468 wrote to memory of 1784	1468	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall NSIS.exe
"C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall NSIS.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe" _?=C:\Users\Admin\AppData\Local\Temp\$R0\
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1872
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c tasklist /FI "USERNAME eq %USERNAME%" /FI "IMAGENAME eq NSIS.exe" /FO csv | "C:\Windows\system32\find.exe" "NSIS.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1468
  - - C:\Windows\SysWOW64\tasklist.exe
      tasklist /FI "USERNAME eq Admin" /FI "IMAGENAME eq NSIS.exe" /FO csv
      4⤵
      Enumerates processes with tasklist
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3688
  - - C:\Windows\SysWOW64\find.exe
      "C:\Windows\system32\find.exe" "NSIS.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:1784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Process Discovery

T1057

Query Registry

T1012

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

C:\Users\Admin\AppData\Local\Temp\nsmBCD9.tmp\StdUtils.dll

Filesize
100KB

MD5
c6a6e03f77c313b267498515488c5740

SHA1
3d49fc2784b9450962ed6b82b46e9c3c957d7c15

SHA256
b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e

SHA512
9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsmBCD9.tmp\System.dll

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsmBCD9.tmp\WinShell.dll

Filesize
3KB

MD5
1cc7c37b7e0c8cd8bf04b6cc283e1e56

SHA1
0b9519763be6625bd5abce175dcc59c96d100d4c

SHA256
9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6

SHA512
7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f

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C:\Users\Admin\AppData\Local\Temp\nsmBCD9.tmp\nsExec.dll

Filesize
6KB

MD5
ec0504e6b8a11d5aad43b296beeb84b2

SHA1
91b5ce085130c8c7194d66b2439ec9e1c206497c

SHA256
5d9ceb1ce5f35aea5f9e5a0c0edeeec04dfefe0c77890c80c70e98209b58b962

SHA512
3f918f1b47e8a919cbe51eb17dc30acc8cfc18e743a1bae5b787d0db7d26038dc1210be98bf5ba3be8d6ed896dbbd7ac3d13e66454a98b2a38c7e69dad30bb57

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C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe

Filesize
296KB

MD5
9a606f191ba036a232b5d09aead537c4

SHA1
f4bded6b73c3cb67e20cc2480c681bd67e03d29a

SHA256
0898c038d2c97ec8646ab4cfd783d7c46e2ec2774375065b5c75bf3d702517fb

SHA512
ed1d039b7e8a0b76872caa1edc52ffe9dcb0c697e2e249a7c52072c1dd626e48ba5fd3c16c2156af145729f2dd39836c12678e76bd78623ecba5a8982451a1b6

Download Submit