6397b07471490f59607f2679626dba6561753e93eb263c69a3b17a30ae2f8adb

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24/02/2024, 09:43

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General

Target

2024-02-24_97d423bfc5d26687fd06f11c68eb3147_cryptolocker.exe
Size

117KB
MD5

97d423bfc5d26687fd06f11c68eb3147
SHA1

0c03e5529c89b50839f15e8a6274bc989bc8df5b
SHA256

6397b07471490f59607f2679626dba6561753e93eb263c69a3b17a30ae2f8adb
SHA512

06bb65d6f1c592fc7d84bc3a114004244c1be7e2be833937904417104ccd68dff530c38dbbeb4815e834e44aa518dbe4e7e7fd0dbaa2f225f8905a5c40bb55f3
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp01QaA:z6a+CdOOtEvwDpjczW

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2168-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012241-11.dat	CryptoLocker_rule2
behavioral1/memory/2168-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2476-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2476-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2168-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012241-11.dat	CryptoLocker_set1
behavioral1/memory/2168-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2476-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2476-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2168-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000012241-11.dat	UPX
behavioral1/memory/2168-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2476-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2476-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2476	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2168	2024-02-24_97d423bfc5d26687fd06f11c68eb3147_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2168-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000012241-11.dat	upx
behavioral1/memory/2168-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2476-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2476-26-0x0000000000500000-0x0000000000510000-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 4 IoCs

description	pid	Process	procid_target
PID 2168 wrote to memory of 2476	2168	2024-02-24_97d423bfc5d26687fd06f11c68eb3147_cryptolocker.exe	28
PID 2168 wrote to memory of 2476	2168	2024-02-24_97d423bfc5d26687fd06f11c68eb3147_cryptolocker.exe	28
PID 2168 wrote to memory of 2476	2168	2024-02-24_97d423bfc5d26687fd06f11c68eb3147_cryptolocker.exe	28
PID 2168 wrote to memory of 2476	2168	2024-02-24_97d423bfc5d26687fd06f11c68eb3147_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-24_97d423bfc5d26687fd06f11c68eb3147_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_97d423bfc5d26687fd06f11c68eb3147_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2168
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2476

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
117KB

MD5
d8767e5fd3eb5cc4470351078cfabf33

SHA1
9f9abd32eca3e2eeba0eda3d9eb2433ba0d749ff

SHA256
4bae09e1856d1ae2e159c1f7796685dcfeb0e777829b76a3b1b4471836f60780

SHA512
1e4a5b7d04f0ed03b295fed7de6395b4b80c4a0fde4a149716bc616ca00c8419c85a6cfda10ae7e111a39147d8378a32a3405fee5d908b8a54a72a86c900c8a0

Download Submit
memory/2168-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2168-1-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2168-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2168-3-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2168-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2476-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2476-18-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2476-20-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2476-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download