a3cbb530bf4092a4b042895d514bebf38320774122175dcee2fb19ab3d591d06

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-11-2024 06:19

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General

Target

2024-11-02_b9a283d3a36ea44edd9e7f3646a26504_cryptolocker.exe
Size

50KB
MD5

b9a283d3a36ea44edd9e7f3646a26504
SHA1

cfa7017e1444986e079f7b9772b98bca6f52f97e
SHA256

a3cbb530bf4092a4b042895d514bebf38320774122175dcee2fb19ab3d591d06
SHA512

2c604cdb9e19a3970c55097bde5cbc6f3f44b457c9d24c9d96f231ba876fe719bcc1ec7043404e90909d7880dc8d02d9e9804f0381cc1efd2b2a1691be39f626
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x5hjatshm:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7b

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

hurok.exe

pid process

2544 hurok.exe
Loads dropped DLL 1 IoCs

Processes:

2024-11-02_b9a283d3a36ea44edd9e7f3646a26504_cryptolocker.exe

pid process

1920 2024-11-02_b9a283d3a36ea44edd9e7f3646a26504_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2544	hurok.exe

pid	process
1920	2024-11-02_b9a283d3a36ea44edd9e7f3646a26504_cryptolocker.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

hurok.exe2024-11-02_b9a283d3a36ea44edd9e7f3646a26504_cryptolocker.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hurok.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-02_b9a283d3a36ea44edd9e7f3646a26504_cryptolocker.exe

Suspicious use of UnmapMainImage 2 IoCs

Processes:

2024-11-02_b9a283d3a36ea44edd9e7f3646a26504_cryptolocker.exehurok.exe

pid process

1920 2024-11-02_b9a283d3a36ea44edd9e7f3646a26504_cryptolocker.exe
2544 hurok.exe

pid	process
1920	2024-11-02_b9a283d3a36ea44edd9e7f3646a26504_cryptolocker.exe
2544	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-11-02_b9a283d3a36ea44edd9e7f3646a26504_cryptolocker.exe

description	pid	process	target process
PID 1920 wrote to memory of 2544	1920	2024-11-02_b9a283d3a36ea44edd9e7f3646a26504_cryptolocker.exe	hurok.exe
PID 1920 wrote to memory of 2544	1920	2024-11-02_b9a283d3a36ea44edd9e7f3646a26504_cryptolocker.exe	hurok.exe
PID 1920 wrote to memory of 2544	1920	2024-11-02_b9a283d3a36ea44edd9e7f3646a26504_cryptolocker.exe	hurok.exe
PID 1920 wrote to memory of 2544	1920	2024-11-02_b9a283d3a36ea44edd9e7f3646a26504_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-02_b9a283d3a36ea44edd9e7f3646a26504_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-02_b9a283d3a36ea44edd9e7f3646a26504_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1920

C:\Users\Admin\AppData\Local\Temp\hurok.exe
"C:\Users\Admin\AppData\Local\Temp\hurok.exe"
2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
PID:2544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
50KB

MD5
ee87ae78ad550bb318a0c91faced4509

SHA1
5292403f95df77b47cc553b823cb2d28479105f0

SHA256
7477cd42d6daa98cc1cbf4bdbfde6f4a13ca829ca388880de419596d7e842a5c

SHA512
7141c43e15752a326ece6c461b528a6bc6f945875129f02d1fbc265945ef1662a49f788db5f52330b92e920c5a109e4b61a654753ed5c1ca4c142099701db24d

Download Submit
memory/1920-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1920-8-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/1920-0-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2544-23-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download