3a847da6fe0e2c300108f0cdc86ee4d68fdd918a14fd4619049bf3d9b2f2c256

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
05-09-2024 12:36

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General

Target

2024-09-05_c7b9fff97334d58a1e979515354e4649_cryptolocker.exe
Size

61KB
MD5

c7b9fff97334d58a1e979515354e4649
SHA1

f47a82d1f94df2486966a8de5927c7a16f2f0953
SHA256

3a847da6fe0e2c300108f0cdc86ee4d68fdd918a14fd4619049bf3d9b2f2c256
SHA512

6d81e03beb3b4919424b97964457bfd31bad2b82c1b9571cd0538efc4484b7b0eb94e2eeb30b2621d44057021e7ad3d6684a04289bab351fdc68a29e0e7ea94d
SSDEEP

768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAP3qhB:H6QFElP6n+gou9cvMOtEvwDpjCpVXhhB

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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	2024-09-05_c7b9fff97334d58a1e979515354e4649_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4888	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3704-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000a000000023440-13.dat	upx
behavioral2/memory/3704-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4888-26-0x0000000000500000-0x0000000000510000-memory.dmp	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	2024-09-05_c7b9fff97334d58a1e979515354e4649_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3704 wrote to memory of 4888	3704	2024-09-05_c7b9fff97334d58a1e979515354e4649_cryptolocker.exe	84
PID 3704 wrote to memory of 4888	3704	2024-09-05_c7b9fff97334d58a1e979515354e4649_cryptolocker.exe	84
PID 3704 wrote to memory of 4888	3704	2024-09-05_c7b9fff97334d58a1e979515354e4649_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-09-05_c7b9fff97334d58a1e979515354e4649_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-05_c7b9fff97334d58a1e979515354e4649_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3704
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4888

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
61KB

MD5
8cbe27eb6ad9127c6c17645166b30b27

SHA1
a46095e4097968c350454f915048c7e303f0a3f3

SHA256
389eefbabc218983cc15748eaccd2c719cab8491e9cd7131ce7a69484f4316f7

SHA512
aa68d3d12c930aa0a07a10c7edbe2a84e1b8f4e85dfbe50127c329517c11ceecbf5c45c9d932da55c62c6611fa25abe17d177fbbb1283f42c210ad815c363168

Download Submit
memory/3704-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3704-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3704-2-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3704-7-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3704-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4888-19-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4888-25-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4888-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download