344f23d14158fe1de2b1e164833f75879bfb53cdf94952b13913e9ae79e4a1d9

Analysis

max time kernel
94s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27/03/2024, 20:38

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General

Target

2024-03-27_8450f8a335a9b48f72e854364004d030_cryptolocker.exe
Size

66KB
MD5

8450f8a335a9b48f72e854364004d030
SHA1

18882ad8e2a84bfcf55faf5a8d40f20ba9ee79bf
SHA256

344f23d14158fe1de2b1e164833f75879bfb53cdf94952b13913e9ae79e4a1d9
SHA512

72a8b8d8c3e561d83c86921acc369501a9a43a6bd4e732680e3aff4b48856f71e853a8768138c889cd2df0b96390edf665e02bd60fd76ffd8fd38727365ff10f
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRLDs:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7x

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023128-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023128-12.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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-03-27_8450f8a335a9b48f72e854364004d030_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
552	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 4892 wrote to memory of 552	4892	2024-03-27_8450f8a335a9b48f72e854364004d030_cryptolocker.exe	87
PID 4892 wrote to memory of 552	4892	2024-03-27_8450f8a335a9b48f72e854364004d030_cryptolocker.exe	87
PID 4892 wrote to memory of 552	4892	2024-03-27_8450f8a335a9b48f72e854364004d030_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-27_8450f8a335a9b48f72e854364004d030_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-27_8450f8a335a9b48f72e854364004d030_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4892
- 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:552

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
66KB

MD5
0f821042daf78c67f53527d539934c3f

SHA1
47ea2e2f9964d4438c806f00a411c12dc625b3c6

SHA256
dde40eb7e607c9043d3b62f475f80033ccf65807710209e6e2fa36faa7e6926d

SHA512
57a3a131d5e6bc77f65f2a879f6bba8a20b27acb9ed592323d99dbdb2af5758fea1777fa98cbdcffd73858a5d4a67614c86d5bdde80e735cb97694b0d7338730

Download Submit
memory/552-21-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/4892-0-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/4892-1-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/4892-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download