75ea81b856501c538e8b8704a652b3daef187a2c4b34a61df7c30cec10fe0145

Analysis

max time kernel
93s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
10/06/2024, 11:21

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General

Target

2024-06-10_8df36fcf80bbeda1db37a685dfec899b_cryptolocker.exe
Size

63KB
MD5

8df36fcf80bbeda1db37a685dfec899b
SHA1

29c6a251687a7a21faeb5f52fa0920029b3295bc
SHA256

75ea81b856501c538e8b8704a652b3daef187a2c4b34a61df7c30cec10fe0145
SHA512

496f8506747e6dc0a0800af07b6f3fede16f9be55ae4b652e9c949d8c300dc7c7e3bcd5f01262e375c0835e4b339ac7ba7e5e7c37b8f59fdae303ccf92516134
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnxb:btng54SMLr+/AO/kIhfoKMHdaN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002342d-12.dat	CryptoLocker_rule2

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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-06-10_8df36fcf80bbeda1db37a685dfec899b_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
3592	gewos.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2596 wrote to memory of 3592	2596	2024-06-10_8df36fcf80bbeda1db37a685dfec899b_cryptolocker.exe	81
PID 2596 wrote to memory of 3592	2596	2024-06-10_8df36fcf80bbeda1db37a685dfec899b_cryptolocker.exe	81
PID 2596 wrote to memory of 3592	2596	2024-06-10_8df36fcf80bbeda1db37a685dfec899b_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-10_8df36fcf80bbeda1db37a685dfec899b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_8df36fcf80bbeda1db37a685dfec899b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2596
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:3592

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
63KB

MD5
12e624d5846118c8e6de32183e0e6069

SHA1
c28332dd4598f33ad82dd277bd42561e0bf86603

SHA256
5d581feb9ab9c06ecfe62d5821af5c7721c6dd29e0e5b4ceb0519933b13e4381

SHA512
d58c0082cce85240acde4d751758e012b653a89978f50dc51b8fd786a5aca5665903a14346a06ac272328e1370f27fbd9ac493a2d6c6d9ec58bd83075d425d9f

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

Filesize
185B

MD5
8cc157254aadae9f33ff11491d6e19ae

SHA1
f68c8c3668a9228cfffae6c1ed2fa8d03c48d98b

SHA256
dbb13db1291a5d926fcb1b9765f3b01a4dee199a2233c0acdf641054c9c669f6

SHA512
552d4b46b40ca9ceab3097060dc5dc7889c46430b60c8d2607c4c2fbbe36fed39104b13715277403eedb0ea199ca6014ad44179b074414d043164cf29f102e8c

Download Submit
memory/2596-0-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/2596-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2596-8-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/3592-25-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download