c8fcd308e5b73f4c4926f0341b8428533d1cba7fd150281c09fc4a7697a361b3

Analysis

max time kernel
148s
max time network
153s
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 12:13

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General

Target

2024-09-05_a628a60c9591cca83e7c9e777e2f3273_cryptolocker.exe
Size

55KB
MD5

a628a60c9591cca83e7c9e777e2f3273
SHA1

52a6738e4019572d521f1fdc7499d7e6220a130f
SHA256

c8fcd308e5b73f4c4926f0341b8428533d1cba7fd150281c09fc4a7697a361b3
SHA512

9ceb3bd7d34d8c666500ec818bf3be0405104be8054e4eb64316276c4b6d750d6b72f087724fd1df6b3fc28673bc3ec2e1d9a7084ad4e0c7da6c52a6426410fc
SSDEEP

768:bco/2n1TCraU6GD1P2wZEjbhxnbcuyD7U9kXDn62tH/1/LpPFP8xLzU:b7/y28wZEjbnouy8G76iH/NLp6vU

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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	2024-09-05_a628a60c9591cca83e7c9e777e2f3273_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3232	rewok.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1180-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral2/files/0x000c000000023498-13.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	2024-09-05_a628a60c9591cca83e7c9e777e2f3273_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1180 wrote to memory of 3232	1180	2024-09-05_a628a60c9591cca83e7c9e777e2f3273_cryptolocker.exe	85
PID 1180 wrote to memory of 3232	1180	2024-09-05_a628a60c9591cca83e7c9e777e2f3273_cryptolocker.exe	85
PID 1180 wrote to memory of 3232	1180	2024-09-05_a628a60c9591cca83e7c9e777e2f3273_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-09-05_a628a60c9591cca83e7c9e777e2f3273_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-05_a628a60c9591cca83e7c9e777e2f3273_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1180
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3232

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\rewok.exe

Filesize
56KB

MD5
482083a893d3cd4001a91c89ec202a63

SHA1
d83f9b492e04290b4ea4958126a81f431a7e2477

SHA256
8ebe7a5c54b5a3b6b9e188c8c88f1d41347004f0e4518db411abbaecc39a33af

SHA512
fe2abeb8e45c61c26bc2b858e2420d575326df9dd33eab48bb6f051fda01a843fb234738a8962c4a3e45368fa4379b45d73fa6949ca9cf440dc0098c940e6341

Download Submit
memory/1180-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1180-1-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/1180-2-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/1180-3-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3232-20-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download