023a9fbd9a2e7d09093a3092719e3fb513ca5ac2dc26387527317c14a24b5d3a

Analysis

max time kernel
13s
max time network
20s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15-03-2024 14:00

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General

Target

2024-03-15_b770e8ad27d31f66406b50840bbb9c83_cryptolocker.exe
Size

65KB
MD5

b770e8ad27d31f66406b50840bbb9c83
SHA1

98e07a7786ff65e1d9c558e6648c5f267a24ed1e
SHA256

023a9fbd9a2e7d09093a3092719e3fb513ca5ac2dc26387527317c14a24b5d3a
SHA512

e8f3757a408b2236d59ffb58c21d7ad4f5ac72181ccee6455213ef0ebc531601a9ce7c65f9c5294236ec55738f6d7353243864f23c02c2b6224742b5577f9258
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRLh:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7A

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0004000000022ea3-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0004000000022ea3-12.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-15_b770e8ad27d31f66406b50840bbb9c83_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
988	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 3028 wrote to memory of 988	3028	2024-03-15_b770e8ad27d31f66406b50840bbb9c83_cryptolocker.exe	100
PID 3028 wrote to memory of 988	3028	2024-03-15_b770e8ad27d31f66406b50840bbb9c83_cryptolocker.exe	100
PID 3028 wrote to memory of 988	3028	2024-03-15_b770e8ad27d31f66406b50840bbb9c83_cryptolocker.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-03-15_b770e8ad27d31f66406b50840bbb9c83_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_b770e8ad27d31f66406b50840bbb9c83_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3028
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  PID:988

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
d124c42860ac1d72c9cf4009fd372117

SHA1
e9d9e801a645a8ad750a8d9ee7301e01f1c4a1cb

SHA256
fa60a6d2b0492b287506c2e02ca016e688d15f2bc209aaf79f75e34309badcb5

SHA512
da358b0657074a25c038e66c1b516caaabdc29e458cfa78b8166fdfea9515db867000d93d55958c1df898495dbdd7edd94c1d3bf4d44a496ec14aa172ec4ad5a

Download Submit
memory/3028-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3028-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3028-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download