2074e1b1c9835158a67f4d9613bc9953be0b423baefb199f9716f912b67dd5e2

Analysis

max time kernel
92s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04/04/2024, 17:50

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General

Target

2024-04-04_ff742bb05c03c3616060f87ec200836a_cryptolocker.exe
Size

65KB
MD5

ff742bb05c03c3616060f87ec200836a
SHA1

941fba71c88613f625088e005aef0c4666bf75ea
SHA256

2074e1b1c9835158a67f4d9613bc9953be0b423baefb199f9716f912b67dd5e2
SHA512

e80e45be83229daad246b751591df8fd261f29aee4c81bc900d7665ac3b52539afce90fac1110b75d5c20585ab457df8f8f6e65b5e6b7c6ad6aff68a36c3141d
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF29v:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7t

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002320b-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002320b-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-04-04_ff742bb05c03c3616060f87ec200836a_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2260	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 3104 wrote to memory of 2260	3104	2024-04-04_ff742bb05c03c3616060f87ec200836a_cryptolocker.exe	87
PID 3104 wrote to memory of 2260	3104	2024-04-04_ff742bb05c03c3616060f87ec200836a_cryptolocker.exe	87
PID 3104 wrote to memory of 2260	3104	2024-04-04_ff742bb05c03c3616060f87ec200836a_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-04_ff742bb05c03c3616060f87ec200836a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-04_ff742bb05c03c3616060f87ec200836a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3104
- 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:2260

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
6bc315f934e2fbf26531b92ca673e5c4

SHA1
5424fd0bef37287a77be3b5585cbfdc1bda01c94

SHA256
7631dfbf457bf1d12df3820fb8b47d195ddfeb3d5e050cb171511226acdf0669

SHA512
f9911acc4d81323921de93819d8f61102f04b93d484085382f70becc160f3a97366a2336a439574ff16a21840c8714b842acade962da6de77258b70e95995eca

Download Submit
memory/2260-19-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/3104-0-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/3104-1-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/3104-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download