3e3f882ecfb25edc42ee54ee8659cb403806d9d448702e1342c4f3eb43e568dd

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05-04-2024 03:33

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General

Target

2024-04-05_26536d0c99a566606f98b264047e4d27_cryptolocker.exe
Size

55KB
MD5

26536d0c99a566606f98b264047e4d27
SHA1

8ba164b05c18ab78d324577e6bd3133c2e3929d2
SHA256

3e3f882ecfb25edc42ee54ee8659cb403806d9d448702e1342c4f3eb43e568dd
SHA512

d05cafe6272a4db7c691559ddd451514936117e7a3a617a45bd85048bc522eab710a7d82d8600148ba402ad331ce3f448c82848d253d530af24e41b3a0aa51d7
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylSV/CCjgcE:79mqyNhQMOtEvwDpjBPY7xv3g8OX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral1/memory/2452-8-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000f000000012248-11.dat	CryptoLocker_rule2
behavioral1/memory/2452-13-0x0000000001F10000-0x0000000001F1F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2452-8-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000f000000012248-11.dat	CryptoLocker_set1
behavioral1/memory/2452-13-0x0000000001F10000-0x0000000001F1F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2508	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2452	2024-04-05_26536d0c99a566606f98b264047e4d27_cryptolocker.exe

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 2452 wrote to memory of 2508	2452	2024-04-05_26536d0c99a566606f98b264047e4d27_cryptolocker.exe	28
PID 2452 wrote to memory of 2508	2452	2024-04-05_26536d0c99a566606f98b264047e4d27_cryptolocker.exe	28
PID 2452 wrote to memory of 2508	2452	2024-04-05_26536d0c99a566606f98b264047e4d27_cryptolocker.exe	28
PID 2452 wrote to memory of 2508	2452	2024-04-05_26536d0c99a566606f98b264047e4d27_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-05_26536d0c99a566606f98b264047e4d27_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_26536d0c99a566606f98b264047e4d27_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2452
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2508

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
56KB

MD5
9f51b3aea209dc38d700a387ebe20dec

SHA1
dfe6c8c81bbfeec7e5b0c6816ec33ac85a5bf8d2

SHA256
38e42413829431f3214bbaff5c5846fd2cdad7d8b0f324f092c2464c4e15caef

SHA512
1dc986be992033958ba247241ce1ceebd8a19dbd509b330fd8c8c8ba59e3fa4954b6930711665a2ee504ee5fcde347a48e7c534c24c26329510c68fc315d2603

Download Submit
memory/2452-8-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2452-1-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download
memory/2452-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2452-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2452-13-0x0000000001F10000-0x0000000001F1F000-memory.dmp

Filesize
60KB

Download
memory/2508-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2508-17-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download