5cbf2451275d0465abaa2f5949a2e043b37dc1b9b0061120125e1b377aab59be

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
08/04/2024, 18:45

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General

Target

2024-04-08_f31d529c6a076f8afd169a33862cd73f_cryptolocker.exe
Size

68KB
MD5

f31d529c6a076f8afd169a33862cd73f
SHA1

9736b65797d6883d2743537a017606de2f6567c5
SHA256

5cbf2451275d0465abaa2f5949a2e043b37dc1b9b0061120125e1b377aab59be
SHA512

526ec4cb1d66ceb65f9f2981633ebcd9a9559cc829021df9b2701909ba7961713151830d5eac92947f404cb5c318821674dcef16ebd67d378f68d4489f2f6d94
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKU50l:DW60sllyWOtEvwDpjwF85C

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2320-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012266-11.dat	CryptoLocker_rule2
behavioral1/memory/2320-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2068-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2320-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000012266-11.dat	CryptoLocker_set1
behavioral1/memory/2320-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2068-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2068	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2320	2024-04-08_f31d529c6a076f8afd169a33862cd73f_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 2320 wrote to memory of 2068	2320	2024-04-08_f31d529c6a076f8afd169a33862cd73f_cryptolocker.exe	28
PID 2320 wrote to memory of 2068	2320	2024-04-08_f31d529c6a076f8afd169a33862cd73f_cryptolocker.exe	28
PID 2320 wrote to memory of 2068	2320	2024-04-08_f31d529c6a076f8afd169a33862cd73f_cryptolocker.exe	28
PID 2320 wrote to memory of 2068	2320	2024-04-08_f31d529c6a076f8afd169a33862cd73f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-08_f31d529c6a076f8afd169a33862cd73f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-08_f31d529c6a076f8afd169a33862cd73f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2320
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2068

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
68KB

MD5
97ed1dab0a62134e3167178e28a7ba49

SHA1
ed2d1387ab1aba40853638a6b7f5fd3bfd43ba4a

SHA256
ded9f81457b623a5e5d7555152e416688f887084c335c5bdf1eb1bb5c095c113

SHA512
ec1c3f437ccb18871ced01deee858e207dded093bf0f3f546a47e3b2a457ca4bc15be7dd202d9663394f04f64f3a7d5764c43179d9fe640dea4bce7a4078d1c4

Download Submit
memory/2068-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2068-22-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2320-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2320-1-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2320-9-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2320-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2320-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download