1657ce9fcd9d1ab14ad8e0d0dc146d9dece0bd3cb2ab8d460df8214e7e498318

Analysis

max time kernel
81s
max time network
149s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241211-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
21-12-2024 17:41

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General

Target

$R0/Uninstall Rewind Launcher.exe
Size

410KB
MD5

6aafa67002a8e4d6a56e37159caddf53
SHA1

f6d7aa2f200af4c0ca7e97be160f10160c7b2557
SHA256

c19f0f495884d52b1a5853d8f7558da02fded70ad99fe8e942cdfdc9bcc51500
SHA512

c4fdb82bd63731265096d58c745e78312ab72932d33680e2d70694c4b5176b78bfbf5f8c87d62921f4e9277d62e3db7510888d6711312c05e497c2baa45d8cde
SSDEEP

6144:+740Io48OJ7oE+KsRTh0UU3Qwvr7QomQGFnIJ4NYqHI9gZHxLluc2Uaq2t0EyL+z:EaZyh0U4F4NYZgZHxpuDoRK2ZO

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-1-5-21-1006597246-3150276181-3318461161-1000\Control Panel\International\Geo\Nation	Un_A.exe

Executes dropped EXE 1 IoCs

pid	Process
3512	Un_A.exe

Loads dropped DLL 12 IoCs

pid	Process
3512	Un_A.exe
3512	Un_A.exe
3512	Un_A.exe
3512	Un_A.exe
3512	Un_A.exe
3512	Un_A.exe
3512	Un_A.exe
3512	Un_A.exe
3512	Un_A.exe
3512	Un_A.exe
3512	Un_A.exe
3512	Un_A.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	Uninstall Rewind Launcher.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Un_A.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3512	Un_A.exe
3512	Un_A.exe
3512	Un_A.exe
3512	Un_A.exe
3512	Un_A.exe
3512	Un_A.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3176 wrote to memory of 3512	3176	Uninstall Rewind Launcher.exe	81
PID 3176 wrote to memory of 3512	3176	Uninstall Rewind Launcher.exe	81
PID 3176 wrote to memory of 3512	3176	Uninstall Rewind Launcher.exe	81

C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall Rewind Launcher.exe
"C:\Users\Admin\AppData\Local\Temp\$R0\Uninstall Rewind Launcher.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3176
- 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
  PID:3512

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\nsxFFEC.tmp\StdUtils.dll

Filesize
100KB

MD5
c6a6e03f77c313b267498515488c5740

SHA1
3d49fc2784b9450962ed6b82b46e9c3c957d7c15

SHA256
b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e

SHA512
9870c5879f7b72836805088079ad5bbafcb59fc3d9127f2160d4ec3d6e88d3cc8ebe5a9f5d20a4720fe6407c1336ef10f33b2b9621bc587e930d4cbacf337803

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

Filesize
12KB

MD5
0d7ad4f45dc6f5aa87f606d0331c6901

SHA1
48df0911f0484cbe2a8cdd5362140b63c41ee457

SHA256
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

SHA512
c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsxFFEC.tmp\UAC.dll

Filesize
14KB

MD5
adb29e6b186daa765dc750128649b63d

SHA1
160cbdc4cb0ac2c142d361df138c537aa7e708c9

SHA256
2f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08

SHA512
b28adcccf0c33660fecd6f95f28f11f793dc9988582187617b4c113fb4e6fdad4cf7694cd8c0300a477e63536456894d119741a940dda09b7df3ff0087a7eada

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

Filesize
3KB

MD5
1cc7c37b7e0c8cd8bf04b6cc283e1e56

SHA1
0b9519763be6625bd5abce175dcc59c96d100d4c

SHA256
9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6

SHA512
7acf7f8e68aa6066b59ca9f2ae2e67997e6b347bc08eb788d2a119b3295c844b5b9606757168e8d2fbd61c2cda367bf80e9e48c9a52c28d5a7a00464bfd2048f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsxFFEC.tmp\modern-wizard.bmp

Filesize
150KB

MD5
52ff52eee3b944b862c11c268a02c196

SHA1
8d041966e6fba10aa5e10ce5dc1dc5175f11b2fe

SHA256
2079f7a3eba60e0d9ee827a7208aa052a71b384873b641de5e299aeb8e733109

SHA512
2861ae5a06f8413810947c08994f4c0da54a1acee8c4df72cd8b03a9503b26e5512809f8d70fd584239b04a651e7329a701bf7ddcee2dec2c2e14d05ae74f220

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsxFFEC.tmp\nsDialogs.dll

Filesize
9KB

MD5
466179e1c8ee8a1ff5e4427dbb6c4a01

SHA1
eb607467009074278e4bd50c7eab400e95ae48f7

SHA256
1e40211af65923c2f4fd02ce021458a7745d28e2f383835e3015e96575632172

SHA512
7508a29c722d45297bfb090c8eb49bd1560ef7d4b35413f16a8aed62d3b1030a93d001a09de98c2b9fea9acf062dc99a7278786f4ece222e7436b261d14ca817

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsxFFEC.tmp\nsProcess.dll

Filesize
4KB

MD5
f0438a894f3a7e01a4aae8d1b5dd0289

SHA1
b058e3fcfb7b550041da16bf10d8837024c38bf6

SHA256
30c6c3dd3cc7fcea6e6081ce821adc7b2888542dae30bf00e881c0a105eb4d11

SHA512
f91fcea19cbddf8086affcb63fe599dc2b36351fc81ac144f58a80a524043ddeaa3943f36c86ebae45dd82e8faf622ea7b7c9b776e74c54b93df2963cfe66cc7

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

Filesize
410KB

MD5
6aafa67002a8e4d6a56e37159caddf53

SHA1
f6d7aa2f200af4c0ca7e97be160f10160c7b2557

SHA256
c19f0f495884d52b1a5853d8f7558da02fded70ad99fe8e942cdfdc9bcc51500

SHA512
c4fdb82bd63731265096d58c745e78312ab72932d33680e2d70694c4b5176b78bfbf5f8c87d62921f4e9277d62e3db7510888d6711312c05e497c2baa45d8cde

Download Submit