8db3d77dea183a811687966214a99d7d156d76c66246d5c8adf97fd312873634

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 05:26

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General

Target

2024-09-19_30241d46dbe946af3272e7cadc24b35f_cryptolocker.exe
Size

58KB
MD5

30241d46dbe946af3272e7cadc24b35f
SHA1

c5a498399ddd4fd9120ff45909ff3512f94fb342
SHA256

8db3d77dea183a811687966214a99d7d156d76c66246d5c8adf97fd312873634
SHA512

0c153b6062fff6d5320f108f3dd4bdf742998af7ede0cf96a7616d2606db031fd3dcadf1cc46f80117710f594ab3dd2fc87f2003f44068b8a82693db83a9d532
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlYrw:bP9g/xtCS3Dxx0LE

Score

7^/10

discovery upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 2 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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	gewos.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	2024-09-19_30241d46dbe946af3272e7cadc24b35f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4380	gewos.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2640-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x00090000000234c0-13.dat	upx

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	2024-09-19_30241d46dbe946af3272e7cadc24b35f_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gewos.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2640 wrote to memory of 4380	2640	2024-09-19_30241d46dbe946af3272e7cadc24b35f_cryptolocker.exe	82
PID 2640 wrote to memory of 4380	2640	2024-09-19_30241d46dbe946af3272e7cadc24b35f_cryptolocker.exe	82
PID 2640 wrote to memory of 4380	2640	2024-09-19_30241d46dbe946af3272e7cadc24b35f_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-09-19_30241d46dbe946af3272e7cadc24b35f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_30241d46dbe946af3272e7cadc24b35f_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2640
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4380

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\gewos.exe

Filesize
58KB

MD5
e6973ad8922e38baf32833680482631f

SHA1
262b7b9735290183cfe5d2755d9eef71d57cec4c

SHA256
0cce007dd93301c683aba170a9cf6dff8e54d649c9975c0ff1e343592cef8da1

SHA512
a42cc7391603eb4280a7576c251b2f8d7ecf64f57007ea0f2e79d2398e844cb2080653e1bd2424e5977a95e71b26eb173470d5fc9e1bb62e4f4090c20c5ba9e8

Download Submit
C:\Users\Admin\AppData\Local\Temp\gewosik.exe

Filesize
184B

MD5
e8e187d833dc7c828130911091e97fbf

SHA1
a9139674b4181aa3bc9f7e1044aae527d8949911

SHA256
6a5cbd140a133132bd1a2a37f2a670daca0b39d22e1683773e7a3201cafb28e2

SHA512
65b0a3cf892614e00de0d6a509decf906898fa201ba66624ad562af71ab5b04e42b15489290ba8e259d03bdf1d30d096216b8f6b78c92a3616a1951c1b82e171

Download Submit
memory/2640-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2640-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/2640-2-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/2640-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4380-26-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download