7e973193c3b28722bf20832879282bd62b9315511af1690dd2bf8b424454c967

Analysis

max time kernel
136s
max time network
132s
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, 03:24

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General

Target

2024-03-26_00a2d097a0fd40e43e4138f4e05757b1_cryptolocker.exe
Size

62KB
MD5

00a2d097a0fd40e43e4138f4e05757b1
SHA1

28e93ce510f3444cb0e9c5f12da1f9371015621f
SHA256

7e973193c3b28722bf20832879282bd62b9315511af1690dd2bf8b424454c967
SHA512

4648e95130fd59a0d8e1f6a5ebdace38ba9b9a69481719cb1e90b988de283b6cf1998973957ae9343ea6dd8b69a83239194e52c6d2ce24b40bd4cbc5dc108ed1
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293WM:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7L

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002321e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002321e-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	2024-03-26_00a2d097a0fd40e43e4138f4e05757b1_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
2700	hurok.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeManageVolumePrivilege	3992	svchost.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 220 wrote to memory of 2700	220	2024-03-26_00a2d097a0fd40e43e4138f4e05757b1_cryptolocker.exe	89
PID 220 wrote to memory of 2700	220	2024-03-26_00a2d097a0fd40e43e4138f4e05757b1_cryptolocker.exe	89
PID 220 wrote to memory of 2700	220	2024-03-26_00a2d097a0fd40e43e4138f4e05757b1_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-26_00a2d097a0fd40e43e4138f4e05757b1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_00a2d097a0fd40e43e4138f4e05757b1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:220
- 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:2700

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
1⤵
PID:2988

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k UnistackSvcGroup
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3992

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
63KB

MD5
651d3c0461790f8a3cb74f4eeb4f15e3

SHA1
b6eb285871e0ab0980176fd9c781a6adf4911ae7

SHA256
55ae8c56f618c28544707638426afbab8a881c336eb2342a10654e2ccc1603b4

SHA512
b596b6d2de111683ca77a57fd57f7535a833c120f09fb1f33555fdefcbf917a6d9487c6a461abcd39ca48fb367ce2713e0f04fd33681d264b651db347649d18c

Download Submit
memory/220-0-0x0000000000720000-0x0000000000726000-memory.dmp

Filesize
24KB

Download
memory/220-1-0x0000000000720000-0x0000000000726000-memory.dmp

Filesize
24KB

Download
memory/220-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2700-25-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3992-42-0x000001D044D40000-0x000001D044D50000-memory.dmp

Filesize
64KB

Download
memory/3992-58-0x000001D044E40000-0x000001D044E50000-memory.dmp

Filesize
64KB

Download
memory/3992-74-0x000001D04D1A0000-0x000001D04D1A1000-memory.dmp

Filesize
4KB

Download
memory/3992-76-0x000001D04D1D0000-0x000001D04D1D1000-memory.dmp

Filesize
4KB

Download
memory/3992-77-0x000001D04D1D0000-0x000001D04D1D1000-memory.dmp

Filesize
4KB

Download
memory/3992-78-0x000001D04D2E0000-0x000001D04D2E1000-memory.dmp

Filesize
4KB

Download