098988fb4df8a47d7923548fa3711b236fd9f3fbfe63aaeac8fab59a9d55fe47

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17/04/2024, 08:45

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-17_d4e3f00ececfba64b7dfd8b3c2c9ceff_cryptolocker.exe
Size

95KB
MD5

d4e3f00ececfba64b7dfd8b3c2c9ceff
SHA1

cd0f93710379f79ce1ad8cbe27d0d651ee4558b1
SHA256

098988fb4df8a47d7923548fa3711b236fd9f3fbfe63aaeac8fab59a9d55fe47
SHA512

fc7bf9344650ea87e100a0aeae0b83d5ddc5b2c252551b8f6e22c659717602466f7460da810a2f52e7053e2e83c82c6714e04800b6bac9e76cf494f8b4eb3f90
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/bD8:zCsanOtEvwDpjB8

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3264-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e9b1-13.dat	CryptoLocker_rule2
behavioral2/memory/3264-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2152-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3264-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000300000001e9b1-13.dat	CryptoLocker_set1
behavioral2/memory/3264-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2152-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3264-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000300000001e9b1-13.dat	UPX
behavioral2/memory/3264-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2152-26-0x0000000000500000-0x0000000000510000-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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-17_d4e3f00ececfba64b7dfd8b3c2c9ceff_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2152	misid.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3264-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000300000001e9b1-13.dat	upx
behavioral2/memory/3264-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2152-26-0x0000000000500000-0x0000000000510000-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 3264 wrote to memory of 2152	3264	2024-04-17_d4e3f00ececfba64b7dfd8b3c2c9ceff_cryptolocker.exe	86
PID 3264 wrote to memory of 2152	3264	2024-04-17_d4e3f00ececfba64b7dfd8b3c2c9ceff_cryptolocker.exe	86
PID 3264 wrote to memory of 2152	3264	2024-04-17_d4e3f00ececfba64b7dfd8b3c2c9ceff_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-17_d4e3f00ececfba64b7dfd8b3c2c9ceff_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-17_d4e3f00ececfba64b7dfd8b3c2c9ceff_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3264
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2152

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

Loading Replay Monitor...

Downloads

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

Filesize
96KB

MD5
ede79d2dc5c2624fe7fcfb480fc5be5a

SHA1
7bf32c763eca1fdded8abefe3c1532e557c3eec7

SHA256
e955065d8b2b10b6d7d4b753d6e4d2f868c78aa1abfeb886be2a8676ffd0971c

SHA512
9f6000fd7ef2bfa27df942a1079f1da8d868cdb470e8ef6eac3bb070f4ec5af720179e2352f10fd958beb28eada6f921883e0f88a12b773b2565a957334c66a1

Download Submit
memory/2152-19-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/2152-25-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2152-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3264-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3264-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3264-2-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3264-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/3264-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download