e9b763546a9ff67c52d13fb031d9578480be03e417897c11f4c718bfa227cc0b

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-11-2024 17:45

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General

Target

2024-11-01_37ea77c53ffd9633918b31d54172ea7c_cryptolocker.exe
Size

34KB
MD5

37ea77c53ffd9633918b31d54172ea7c
SHA1

5d5e7edce54a11241ad28759062961138c436697
SHA256

e9b763546a9ff67c52d13fb031d9578480be03e417897c11f4c718bfa227cc0b
SHA512

e35e0822abd15977bb22e928d40398b9bad0cca5b97d98d68f1c5dc087a0e30095b4c4482fc02da453a97ae0155cb27208875139e1fa550e2a02b8e8b1375e88
SSDEEP

768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5axRVo:qUmnpomddpMOtEvwDpjjaYa2

Score

7^/10

discovery upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-11-01_37ea77c53ffd9633918b31d54172ea7c_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	2024-11-01_37ea77c53ffd9633918b31d54172ea7c_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3996 asih.exe

pid	process
3996	asih.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/1668-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral2/memory/1668-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/3996-27-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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

System Information Discovery
T1082

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:

2024-11-01_37ea77c53ffd9633918b31d54172ea7c_cryptolocker.exeasih.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-01_37ea77c53ffd9633918b31d54172ea7c_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-11-01_37ea77c53ffd9633918b31d54172ea7c_cryptolocker.exe

description	pid	process	target process
PID 1668 wrote to memory of 3996	1668	2024-11-01_37ea77c53ffd9633918b31d54172ea7c_cryptolocker.exe	asih.exe
PID 1668 wrote to memory of 3996	1668	2024-11-01_37ea77c53ffd9633918b31d54172ea7c_cryptolocker.exe	asih.exe
PID 1668 wrote to memory of 3996	1668	2024-11-01_37ea77c53ffd9633918b31d54172ea7c_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-01_37ea77c53ffd9633918b31d54172ea7c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-01_37ea77c53ffd9633918b31d54172ea7c_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1668

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3996

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
34KB

MD5
2dddf336cdb456384a681bc575df4dc8

SHA1
0e10dacbedd1245c5fbf1378a89d1a257acbd26a

SHA256
10e18aad48662fd919a8e8399f2b870e3a05636d1454a0f7d54e314bc6b6a12d

SHA512
8fd85fcf14590d810a7362e91c3b8547aed10efa79e000ac22fc2050e7039ab6e5d4790e3cc3c71b505b6d4c41427cb805c9e507e7e2f6c140c9d3bbfa46924a

Download Submit
memory/1668-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1668-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1668-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1668-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/1668-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3996-20-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3996-21-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3996-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download