c04ed4f5a23b48c07c2fe9d4f2b12d8732a35bb82e11c1f985b095e31ee5bf0d

Analysis

max time kernel
135s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
15/04/2024, 10:18

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General

Target

2024-04-15_e1501105b8b4e848fd3cc9a0736aa253_cryptolocker.exe
Size

64KB
MD5

e1501105b8b4e848fd3cc9a0736aa253
SHA1

98a61cd56d6d685e4d81891bcda0261533a244b1
SHA256

c04ed4f5a23b48c07c2fe9d4f2b12d8732a35bb82e11c1f985b095e31ee5bf0d
SHA512

573825ca4ac8f88b6e75b338a3739f571a3296e4b60b26272ce699ff58cd6044bc85be6339114b583e0d26f4db4a7d089eb3ea47fb2d3957ebc8fa330ec7cd0b
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293B85:aq7tdgI2MyzNORQtOflIwoHNV2XBFV78

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97c-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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	hurok.exe
Key value queried	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	2024-04-15_e1501105b8b4e848fd3cc9a0736aa253_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5024	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 1476 wrote to memory of 5024	1476	2024-04-15_e1501105b8b4e848fd3cc9a0736aa253_cryptolocker.exe	89
PID 1476 wrote to memory of 5024	1476	2024-04-15_e1501105b8b4e848fd3cc9a0736aa253_cryptolocker.exe	89
PID 1476 wrote to memory of 5024	1476	2024-04-15_e1501105b8b4e848fd3cc9a0736aa253_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-04-15_e1501105b8b4e848fd3cc9a0736aa253_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_e1501105b8b4e848fd3cc9a0736aa253_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1476
- 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:5024

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
64KB

MD5
70fe033bdb88e60ccc27ec3317317717

SHA1
d382d53161a1677f1d2ef0672f6cec3e7c6fe4b5

SHA256
1da91e6894a30cce21643da3c237c8dc583ded571b1d51b10aafa088a187d7e6

SHA512
6955c5cdfe8fc09e8c8e8ee45cce8c771d4aeb8feca28cad35dc390525efc8e104aaee3113cad8fc8b86c755bf12f6405a9f2eeb5de86875fd8e6143ea2737bf

Download Submit
memory/1476-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1476-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1476-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5024-22-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download