3b6458d4de6902a726d0d8e75b2d2a518479822fff1b37a226a90183b571103e

Analysis

max time kernel
92s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
13/05/2024, 07:36

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General

Target

2024-05-13_9359ad295ecc2ace2d5923df1346789c_cryptolocker.exe
Size

52KB
MD5

9359ad295ecc2ace2d5923df1346789c
SHA1

e54c86502d778b95e81a587fd1faad80e56570cf
SHA256

3b6458d4de6902a726d0d8e75b2d2a518479822fff1b37a226a90183b571103e
SHA512

387fbd563ba32d62533a9f919d33f412fa595362ae97e826c9ab3b99fcd119d0bd0032d7996ed4cb2d0564a84e9c014d34140586159e2bc92fc8a2704b91f49b
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAI4km:aq7tdgI2MyzNORQtOflIwoHNV2XBFV79

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c0000000233da-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c0000000233da-12.dat	CryptoLocker_set1

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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-13_9359ad295ecc2ace2d5923df1346789c_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3540	hurok.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 4000 wrote to memory of 3540	4000	2024-05-13_9359ad295ecc2ace2d5923df1346789c_cryptolocker.exe	82
PID 4000 wrote to memory of 3540	4000	2024-05-13_9359ad295ecc2ace2d5923df1346789c_cryptolocker.exe	82
PID 4000 wrote to memory of 3540	4000	2024-05-13_9359ad295ecc2ace2d5923df1346789c_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-13_9359ad295ecc2ace2d5923df1346789c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-13_9359ad295ecc2ace2d5923df1346789c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4000
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:3540

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\hurok.exe

Filesize
52KB

MD5
ab8692dace261d81d0b15becef9c4414

SHA1
44bdbb9d48d2e73e55fc5640263cf02cc2c03b18

SHA256
bfaf33138e5e8e1aa2e08bfeeff5eda22378ce33279a8f33ba30cb674e83a109

SHA512
4ad2f0d83a7d854b7a1b2bc964f6f25455519b970751b0496e1ca81093e8023e8ed1db60cbbf6d1ecf8003c1715c957553a7b517c85ade0612e2c1bd6a3c8cfd

Download Submit
memory/3540-25-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/4000-0-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/4000-1-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/4000-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download