1cfe56a375b4f9d16b8ee64519f7591cfa8ed76e122a6cc175c9d820d573fd95

Analysis

max time kernel
142s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26/03/2024, 18:31

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General

Target

2024-03-26_726088d791e9d5d3f6a79cc0883083a8_cryptolocker.exe
Size

65KB
MD5

726088d791e9d5d3f6a79cc0883083a8
SHA1

866ef3257052cf2ce1552c9d48291f5ce17a2943
SHA256

1cfe56a375b4f9d16b8ee64519f7591cfa8ed76e122a6cc175c9d820d573fd95
SHA512

ba8877ab198e8c32d20522ae525114364b4395a4cf47a98f36639ecefe2b7466a529fc4446ff99d62cad20dbb3220a719d172534d5da7d27fa4dc402116b3a88
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF29k:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7i

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-26_726088d791e9d5d3f6a79cc0883083a8_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
1648	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 1596 wrote to memory of 1648	1596	2024-03-26_726088d791e9d5d3f6a79cc0883083a8_cryptolocker.exe	91
PID 1596 wrote to memory of 1648	1596	2024-03-26_726088d791e9d5d3f6a79cc0883083a8_cryptolocker.exe	91
PID 1596 wrote to memory of 1648	1596	2024-03-26_726088d791e9d5d3f6a79cc0883083a8_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-26_726088d791e9d5d3f6a79cc0883083a8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_726088d791e9d5d3f6a79cc0883083a8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1596
- 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:1648

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
65KB

MD5
24544019bbef15e7f3f9c11838f2ef89

SHA1
5f22843f7a828a5bf2e1af3a8daea6f077ae034b

SHA256
9c0eb11f6d1124ff52af9adf3dfed458bcca88cc5524154bc1f3c8f0ee295d54

SHA512
e1e1253728ad9181c9ff91d65d4ae9a2a57ea495d493d78105ec80e493b98aca71d9e34ac91628e1a18bf61c685921739f32ee7df6a5527fd1a853b57890166d

Download Submit
memory/1596-0-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/1596-1-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/1596-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1648-21-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download