c75f4869a645b834b94fb48c7235096cff4ab2048c3f0cf48ce2ff46613983ec

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
26/04/2024, 20:47

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General

Target

2024-04-26_a968ae702a4f9b694f3002f9b2b8b03c_cryptolocker.exe
Size

127KB
MD5

a968ae702a4f9b694f3002f9b2b8b03c
SHA1

d0c14c3281c2ec161cc620a34f28ace1457aaa1a
SHA256

c75f4869a645b834b94fb48c7235096cff4ab2048c3f0cf48ce2ff46613983ec
SHA512

882f7b2a5d51d9c7519574d45feae9386a346d80f7ab4156f3be7b469945b67c9f76d5d0244712a0a0e54b2bd3863f9a5ad87ff2dbbfc5adf5e6da5e4c14c821
SSDEEP

1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYOVbvh//LITN:vCjsIOtEvwDpj5H9YvQd2RE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b23-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b23-12.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-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	2024-04-26_a968ae702a4f9b694f3002f9b2b8b03c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3592	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 3268 wrote to memory of 3592	3268	2024-04-26_a968ae702a4f9b694f3002f9b2b8b03c_cryptolocker.exe	83
PID 3268 wrote to memory of 3592	3268	2024-04-26_a968ae702a4f9b694f3002f9b2b8b03c_cryptolocker.exe	83
PID 3268 wrote to memory of 3592	3268	2024-04-26_a968ae702a4f9b694f3002f9b2b8b03c_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-26_a968ae702a4f9b694f3002f9b2b8b03c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_a968ae702a4f9b694f3002f9b2b8b03c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3268
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - 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\misid.exe

Filesize
127KB

MD5
a265d7d05414aa186746414844f91a28

SHA1
a7129de5d7e44e044115d878b3c558b2554da632

SHA256
791da0d3732a76f4058854014fc70a4b7cb9f046056ea20c7054d07ed4e86b49

SHA512
2466e49fdba3daa61ad91b9ceecdd8499348d45bc3b4bead758a834beed1276eb0cd1a6c655ab052544e275bb6538b6b4014f9dbdf8e42d6520dbb19702f0b4e

Download Submit
memory/3268-0-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/3268-1-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/3268-8-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/3592-18-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/3592-23-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download