b2948bf6cedd5a76c245d5ef5c1510330d882bd16baf6527a651c126a99cd870

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
14/02/2024, 07:35

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General

Target

2024-02-14_48d3bf7ebde53de07c3362d7ea1d0cdb_cryptolocker.exe
Size

63KB
MD5

48d3bf7ebde53de07c3362d7ea1d0cdb
SHA1

75b4c820a81b367c674fd7dc88ac579f1a9a39c0
SHA256

b2948bf6cedd5a76c245d5ef5c1510330d882bd16baf6527a651c126a99cd870
SHA512

dcd7414a75ae20852662e5627fba650213152d15df32231ff1a8d816243b7441a20e817d406a9e9ffeeef8b1334ea6e1091311f474b0c17f0c5592a202b45e36
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYibAoE:1nK6a+qdOOtEvwDpj2

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1516-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023219-13.dat	CryptoLocker_rule2
behavioral2/memory/1516-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3444-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1516-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023219-13.dat	CryptoLocker_set1
behavioral2/memory/1516-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/memory/3444-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1516-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/files/0x0007000000023219-13.dat	UPX
behavioral2/memory/1516-17-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/memory/3444-26-0x0000000000500000-0x000000000050F311-memory.dmp	UPX

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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	2024-02-14_48d3bf7ebde53de07c3362d7ea1d0cdb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3444	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1516-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/files/0x0007000000023219-13.dat	upx
behavioral2/memory/1516-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/3444-26-0x0000000000500000-0x000000000050F311-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 1516 wrote to memory of 3444	1516	2024-02-14_48d3bf7ebde53de07c3362d7ea1d0cdb_cryptolocker.exe	84
PID 1516 wrote to memory of 3444	1516	2024-02-14_48d3bf7ebde53de07c3362d7ea1d0cdb_cryptolocker.exe	84
PID 1516 wrote to memory of 3444	1516	2024-02-14_48d3bf7ebde53de07c3362d7ea1d0cdb_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-14_48d3bf7ebde53de07c3362d7ea1d0cdb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_48d3bf7ebde53de07c3362d7ea1d0cdb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1516
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3444

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
63KB

MD5
814004e263e6354af00902a4a2e13132

SHA1
d6e65ed9689fb37b8bcb78f65b9ef402159d4bc5

SHA256
938a162494d8fee730124ebd61db737ee074e7edf5f48e2f019af3f8125d4b91

SHA512
8ebe49f0ab10c1914e8e0a7de46629383ab0adf1f37ec5970e6da2771a4993176377828cbc1e644fd02dd7a22cb9c2b164e49bf2a582bfd8e4b4f19ef01cef6b

Download Submit
memory/1516-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1516-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1516-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1516-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/1516-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/3444-19-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/3444-24-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3444-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download