ba8a3b3b4f89f221dd4276f22140925ffe0f0bdcba33e9c198d8f28db76efee2

Analysis

max time kernel
139s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12/02/2024, 14:48

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General

Target

2024-02-12_dff6b09dfcf7518d734ca08e02acf05e_cryptolocker.exe
Size

69KB
MD5

dff6b09dfcf7518d734ca08e02acf05e
SHA1

ca80d0dafc4f178d57162d0d5c776a08232c9169
SHA256

ba8a3b3b4f89f221dd4276f22140925ffe0f0bdcba33e9c198d8f28db76efee2
SHA512

3e1f8a7b1410c5b3d30926590f0a20d749194dbf229db9290754403144de120a93023784b4156da9e8d96bf2e8ee7aba5512b09b2369f7aceb24c0f773a32c33
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUl:DW60sllyWOtEvwDpjwF85r

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/976-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023149-13.dat	CryptoLocker_rule2
behavioral2/memory/976-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/976-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000023149-13.dat	CryptoLocker_set1
behavioral2/memory/976-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-12_dff6b09dfcf7518d734ca08e02acf05e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4460	asih.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 976 wrote to memory of 4460	976	2024-02-12_dff6b09dfcf7518d734ca08e02acf05e_cryptolocker.exe	84
PID 976 wrote to memory of 4460	976	2024-02-12_dff6b09dfcf7518d734ca08e02acf05e_cryptolocker.exe	84
PID 976 wrote to memory of 4460	976	2024-02-12_dff6b09dfcf7518d734ca08e02acf05e_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-12_dff6b09dfcf7518d734ca08e02acf05e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_dff6b09dfcf7518d734ca08e02acf05e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:976
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4460

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
69KB

MD5
1927a2e4e1228bcae4bf4095af95907e

SHA1
3fcfc4331d426df9dac9c920cb079bd1f0906940

SHA256
b589c2d66fb9d525907d99a05d7d5a594818e0647ca5d4a3ebbee42d6bd62952

SHA512
3d9e29d537293e075a7238e4abb76239e4808aa48ce89cafb570c70ad105d99fa28def315f79c489154907c68a03bd7371b7bca45af82b213b89e7b4fe822d7e

Download Submit
memory/976-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/976-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/976-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/976-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/976-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4460-19-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/4460-21-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download