491187444a1dbfec709afb612008e72e3027f5d6f9eaecbcef012db8d33b5a51

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12/03/2024, 12:45

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General

Target

2024-03-12_b0138e1da5fdb3af970fa9848a2a913c_cryptolocker.exe
Size

128KB
MD5

b0138e1da5fdb3af970fa9848a2a913c
SHA1

849b5e65e59932c6efcfcc76ba5d71a35bd47235
SHA256

491187444a1dbfec709afb612008e72e3027f5d6f9eaecbcef012db8d33b5a51
SHA512

2cbe578a1992bcfbedea90bb92908a4dd9daaa566f47a1f9034c35405cfec2056c88af1a30d4511c390d767909c64f70ba6d1f54293a136d9af40c468acccdf1
SSDEEP

1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYOVbvh//6:vCjsIOtEvwDpj5H9YvQd2RA

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d00000002315a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000d00000002315a-12.dat	CryptoLocker_set1

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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-12_b0138e1da5fdb3af970fa9848a2a913c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3076	misid.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 3212 wrote to memory of 3076	3212	2024-03-12_b0138e1da5fdb3af970fa9848a2a913c_cryptolocker.exe	84
PID 3212 wrote to memory of 3076	3212	2024-03-12_b0138e1da5fdb3af970fa9848a2a913c_cryptolocker.exe	84
PID 3212 wrote to memory of 3076	3212	2024-03-12_b0138e1da5fdb3af970fa9848a2a913c_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-03-12_b0138e1da5fdb3af970fa9848a2a913c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_b0138e1da5fdb3af970fa9848a2a913c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3212
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3076

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\misid.exe

Filesize
129KB

MD5
34724ba3578489054675934c1d449406

SHA1
6a58dff90aa0bff3c1e639cd4230e8b04f103ba7

SHA256
7cb06bb938db64c3401d91488f2a37cefc09dd16752e6fe38d35dd5b77125b5f

SHA512
0e0c44ff52cee9ab7cfa2f9155910d4196fa629394bc38d4fe8db630450a2bf8c62b0c83f2145c099f2addd1479bccde153f40f933fb1f3da20afeb0d0e0a5ec

Download Submit
memory/3076-18-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3076-17-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/3212-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3212-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3212-2-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download