bc56b6c9802543eccf7928e93d8151fa949cb0c859045613f93077ba41e8d48f

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09/10/2024, 04:35

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General

Target

2024-10-09_b9143aab71f878daf703524b8fc3ec62_cryptolocker.exe
Size

58KB
MD5

b9143aab71f878daf703524b8fc3ec62
SHA1

8b6a7ad872883c765aafe46b2f2110259285440f
SHA256

bc56b6c9802543eccf7928e93d8151fa949cb0c859045613f93077ba41e8d48f
SHA512

2c13f87374e0b31e74dc86cb14803c33ed57c4f596629d53f76fc7cb2ad458561ddfcd08fdbef6a692ee8aaefe933b7f22c254055cdef4b9fc205b4ede981183
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlgcSZ:bP9g/xtCS3Dxx01

Score

7^/10

discovery upx

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	2024-10-09_b9143aab71f878daf703524b8fc3ec62_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1228	gewos.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1596-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x000c000000023b33-13.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	2024-10-09_b9143aab71f878daf703524b8fc3ec62_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 1596 wrote to memory of 1228	1596	2024-10-09_b9143aab71f878daf703524b8fc3ec62_cryptolocker.exe	86
PID 1596 wrote to memory of 1228	1596	2024-10-09_b9143aab71f878daf703524b8fc3ec62_cryptolocker.exe	86
PID 1596 wrote to memory of 1228	1596	2024-10-09_b9143aab71f878daf703524b8fc3ec62_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-10-09_b9143aab71f878daf703524b8fc3ec62_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-09_b9143aab71f878daf703524b8fc3ec62_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1596
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1228

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
5a79c4a993a949c26286aa1654ba885e

SHA1
f38491edcc5bab3fff09ba27612f57e882361456

SHA256
9cfdc274d04d183183ca1b1fe1440e5de180ba73db3e2ce12bd82b48fb9154f3

SHA512
b8e25d5c932dcc01986cd93533b98f020718a812cf5217b399dcd7c9560670593b4ff85ab9be914c1e8efd8e066767f16299bc4b4ba232128a42d935f3f40832

Download Submit
memory/1228-20-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/1596-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1596-1-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/1596-2-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/1596-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download