15da2e1c9c8bcf292bcf57e62b748e0dc70025b28d541406bc2caa31b8b069dc

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
07/01/2024, 12:17

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General

Target

2024-01-06_dc41e32c2d1bd0482aeb6046f90c4341_cryptolocker.exe
Size

70KB
MD5

dc41e32c2d1bd0482aeb6046f90c4341
SHA1

8044d390d7571389f8c10eee85a34dabe71baecc
SHA256

15da2e1c9c8bcf292bcf57e62b748e0dc70025b28d541406bc2caa31b8b069dc
SHA512

e371357a4a3129348b6650b95fe7a67d02f25962fe272c381ca66b978d6484fc93ea9187f54bd3c12f2c0a17fa09467f90035e37136a018bc5a2225a0b37f033
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj9aYaFAeB+8x7m:z6a+CdOOtEvwDpjQk

Score

7^/10

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-01-06_dc41e32c2d1bd0482aeb6046f90c4341_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5116	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/428-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000400000001e96f-13.dat	upx
behavioral2/memory/428-19-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/5116-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/5116-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 428 wrote to memory of 5116	428	2024-01-06_dc41e32c2d1bd0482aeb6046f90c4341_cryptolocker.exe	17
PID 428 wrote to memory of 5116	428	2024-01-06_dc41e32c2d1bd0482aeb6046f90c4341_cryptolocker.exe	17
PID 428 wrote to memory of 5116	428	2024-01-06_dc41e32c2d1bd0482aeb6046f90c4341_cryptolocker.exe	17

C:\Users\Admin\AppData\Local\Temp\2024-01-06_dc41e32c2d1bd0482aeb6046f90c4341_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-06_dc41e32c2d1bd0482aeb6046f90c4341_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:428
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5116

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\asih.exe

Filesize
70KB

MD5
b4cf061dbef8bc8bcfaf8248c7bc1a38

SHA1
458b699ff918d082845a06cf283600f8c8dd5ef5

SHA256
979bbf917a1412493fac7614b7d3b95a9e01860736d4856379c3ae0776197a69

SHA512
261959f492e7ba913f59d29ef5179c1d4fa8dca0cee8035e804b2cf4b22ebca9351b41eb358dbb2a3894e7c2ce59f3fccef33d5e05a1098e42fbdfbb8aa97b39

Download Submit
memory/428-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/428-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/428-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/428-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/428-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/5116-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5116-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/5116-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/5116-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download