ae56b160203721d6920ba3ab7224fecb24ee6ba0857559a7867e05cdc364ae05

Resubmissions

28/03/2025, 02:18

250328-crhdbssqz4 8

28/03/2025, 01:45

250328-b6dg9az1bx 8

Analysis

max time kernel
102s
max time network
111s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20250314-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250314-enlocale:en-usos:windows10-ltsc_2021-x64system
submitted
28/03/2025, 02:18

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General

Target

$R0/Uninstall SaveSetup.exe
Size

136KB
MD5

47290fe8abedb0dd98b3c0148a257a76
SHA1

c479144a04b2c3dccd9432679a8c8bc97372585b
SHA256

bd38144ac0c2667d3a7f3f3054eb93362009f507b79b05a60a77159e0790c3fb
SHA512

a78c67d03765bc5eb289fc28638a8511a45d44725ad8ba39cc98effbdacc8282d2571c5f699ae5d187f0502be612baf8b1ce2caa2bc4146e82fb52a047322f9d
SSDEEP

3072:in77v00hEoDEtaucceAYOp4NRuZ4UraH2tvhOEA1RJCir86SrSrv6Ia3q:i740IsmfU0xs2t0EyL+yaa

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-1-5-21-780313508-644878201-565826771-1000\Control Panel\International\Geo\Nation	Un_A.exe

Executes dropped EXE 1 IoCs

pid	Process
3036	Un_A.exe

Loads dropped DLL 6 IoCs

pid	Process
3036	Un_A.exe
3036	Un_A.exe
3036	Un_A.exe
3036	Un_A.exe
3036	Un_A.exe
3036	Un_A.exe

Enumerates processes with tasklist 1 TTPs 1 IoCs

discovery

Process Discovery

T1057

pid	Process
3904	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	Uninstall SaveSetup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Un_A.exe
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

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3036	Un_A.exe
3036	Un_A.exe
3904	tasklist.exe
3904	tasklist.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3904	tasklist.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4836 wrote to memory of 3036	4836	Uninstall SaveSetup.exe	81
PID 4836 wrote to memory of 3036	4836	Uninstall SaveSetup.exe	81
PID 4836 wrote to memory of 3036	4836	Uninstall SaveSetup.exe	81
PID 3036 wrote to memory of 5624	3036	Un_A.exe	87
PID 3036 wrote to memory of 5624	3036	Un_A.exe	87
PID 3036 wrote to memory of 5624	3036	Un_A.exe	87
PID 5624 wrote to memory of 3904	5624	cmd.exe	89
PID 5624 wrote to memory of 3904	5624	cmd.exe	89
PID 5624 wrote to memory of 3904	5624	cmd.exe	89
PID 5624 wrote to memory of 1196	5624	cmd.exe	90
PID 5624 wrote to memory of 1196	5624	cmd.exe	90
PID 5624 wrote to memory of 1196	5624	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall SaveSetup.exe
"C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall SaveSetup.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4836
- 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:3036
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c tasklist /FI "USERNAME eq %USERNAME%" /FI "IMAGENAME eq SaveSetup.exe" /FO csv | "C:\Windows\system32\find.exe" "SaveSetup.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5624
  - - C:\Windows\SysWOW64\tasklist.exe
      tasklist /FI "USERNAME eq Admin" /FI "IMAGENAME eq SaveSetup.exe" /FO csv
      4⤵
      Enumerates processes with tasklist
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3904
  - - C:\Windows\SysWOW64\find.exe
      "C:\Windows\system32\find.exe" "SaveSetup.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:1196

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\nskDEF7.tmp\StdUtils.dll

Filesize
100KB

MD5
c6a6e03f77c313b267498515488c5740

SHA1
3d49fc2784b9450962ed6b82b46e9c3c957d7c15

SHA256
b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e

SHA512
9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803

Download Submit
C:\Users\Admin\AppData\Local\Temp\nskDEF7.tmp\System.dll

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

Download Submit
C:\Users\Admin\AppData\Local\Temp\nskDEF7.tmp\WinShell.dll

Filesize
3KB

MD5
1cc7c37b7e0c8cd8bf04b6cc283e1e56

SHA1
0b9519763be6625bd5abce175dcc59c96d100d4c

SHA256
9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6

SHA512
7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nskDEF7.tmp\nsExec.dll

Filesize
6KB

MD5
ec0504e6b8a11d5aad43b296beeb84b2

SHA1
91b5ce085130c8c7194d66b2439ec9e1c206497c

SHA256
5d9ceb1ce5f35aea5f9e5a0c0edeeec04dfefe0c77890c80c70e98209b58b962

SHA512
3f918f1b47e8a919cbe51eb17dc30acc8cfc18e743a1bae5b787d0db7d26038dc1210be98bf5ba3be8d6ed896dbbd7ac3d13e66454a98b2a38c7e69dad30bb57

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

Filesize
136KB

MD5
47290fe8abedb0dd98b3c0148a257a76

SHA1
c479144a04b2c3dccd9432679a8c8bc97372585b

SHA256
bd38144ac0c2667d3a7f3f3054eb93362009f507b79b05a60a77159e0790c3fb

SHA512
a78c67d03765bc5eb289fc28638a8511a45d44725ad8ba39cc98effbdacc8282d2571c5f699ae5d187f0502be612baf8b1ce2caa2bc4146e82fb52a047322f9d

Download Submit