a64c88cefe88484ce4d18d5c1006f2b45f9f2d89fec3fa1806cf98ed229d1fc5

Analysis

max time kernel
145s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
27/01/2024, 21:41

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General

Target

2024-01-27_e5f61f2cbafeef848de32e18348f9420_cryptolocker.exe
Size

49KB
MD5

e5f61f2cbafeef848de32e18348f9420
SHA1

5c9e47dcd7e455c1a564dcaba43bb50a59cc563a
SHA256

a64c88cefe88484ce4d18d5c1006f2b45f9f2d89fec3fa1806cf98ed229d1fc5
SHA512

cfc5b8ed39bb061458974c5cc3797cce1a5dde814cd1eb69bd56bf58adf0963b74f60ae7f7750555e3c7d8f75ccdb3c6fccc6a623c96873e86d6ef04206d0479
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIE+t:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7Q

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023207-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023207-12.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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-01-27_e5f61f2cbafeef848de32e18348f9420_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4700	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 4692 wrote to memory of 4700	4692	2024-01-27_e5f61f2cbafeef848de32e18348f9420_cryptolocker.exe	84
PID 4692 wrote to memory of 4700	4692	2024-01-27_e5f61f2cbafeef848de32e18348f9420_cryptolocker.exe	84
PID 4692 wrote to memory of 4700	4692	2024-01-27_e5f61f2cbafeef848de32e18348f9420_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-01-27_e5f61f2cbafeef848de32e18348f9420_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_e5f61f2cbafeef848de32e18348f9420_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4692
- 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:4700

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
49KB

MD5
1b92e5d049c4bf4bab8856483143d5ee

SHA1
cdf22e8dc71840220b0632486cfd498391093e1c

SHA256
42f56434f12ed14bd96ee1db387900ab9ea67a60490cbbb2ab80c0a3529df94c

SHA512
bf94d30cdc10beb763c605659b27db26e1dd18b4b41ed4de45f1e90eeb4ce405d3f257a6710f323fd599ece31451503140ab3148df9433392f281241c635084b

Download Submit
memory/4692-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4692-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4692-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4700-22-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download