359c919eabcf90228ba4b625d29a41a675514d2bd7795b6355930c914635acee

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
29/04/2024, 19:57

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General

Target

2024-04-29_b1ec41cea6496f3b8109a6245a5cfdbc_cryptolocker.exe
Size

47KB
MD5

b1ec41cea6496f3b8109a6245a5cfdbc
SHA1

d17b6717c170881f1449b750fe8fdadde1c6280c
SHA256

359c919eabcf90228ba4b625d29a41a675514d2bd7795b6355930c914635acee
SHA512

6bf3e4010e9fa6c6b9cc2eb9a6691a322d1edaf24971b38f12d6b7a171c8c476da3a181c6c66d2e123300aab255d8cfaeda6fca20e5a40360bcc5f76424306ca
SSDEEP

768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/Uth8igNrr42A7n0FmB0M1:vj+jsMQMOtEvwDpj5HczerLO04BX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b24-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b24-12.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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-04-29_b1ec41cea6496f3b8109a6245a5cfdbc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
440	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 712 wrote to memory of 440	712	2024-04-29_b1ec41cea6496f3b8109a6245a5cfdbc_cryptolocker.exe	83
PID 712 wrote to memory of 440	712	2024-04-29_b1ec41cea6496f3b8109a6245a5cfdbc_cryptolocker.exe	83
PID 712 wrote to memory of 440	712	2024-04-29_b1ec41cea6496f3b8109a6245a5cfdbc_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-29_b1ec41cea6496f3b8109a6245a5cfdbc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_b1ec41cea6496f3b8109a6245a5cfdbc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:712
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:440

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
47KB

MD5
a63f51b9164fd343b87791f868a2e09a

SHA1
c169c5f3c237f1a6cb75c44970558f3acf23039a

SHA256
38542f1a0502ab92216145f3bc9c40dbcf21477370a166975905a23770733e79

SHA512
f219ae02d516962411c1aabe189a8b97347ed0c5034b226addd3edb0459565b2fd1ba62effb736931424f1ecea2552d5a85c467c8904d9c99b8cef260bdb82fe

Download Submit
memory/440-17-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/440-23-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/712-0-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/712-1-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/712-8-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download