351b4214b06b9ea9fa5e90a81831b764851526c7d8e1ea805777031f5fd60c1c

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01/06/2024, 22:25

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General

Target

2024-06-01_24f687cb099d03ce60045e7ef8848640_cryptolocker.exe
Size

48KB
MD5

24f687cb099d03ce60045e7ef8848640
SHA1

c19370685affdb636c66ce0a069ddd6809ce62ce
SHA256

351b4214b06b9ea9fa5e90a81831b764851526c7d8e1ea805777031f5fd60c1c
SHA512

bb501093b33443011a53d2d72878d02a88300170b452e14b08537763067bba7e2fe4ec244b6ef3fc010faaf08a995ab75a42a543e3306bf5239cf25ae7b3d102
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvy3Sp8LW:79mqyNhQMOtEvwDpjBzckqSuS

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1968-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000016056-11.dat	CryptoLocker_rule2
behavioral1/memory/1968-13-0x00000000005D0000-0x00000000005DF000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1968-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2284-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1968-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000016056-11.dat	CryptoLocker_set1
behavioral1/memory/1968-13-0x00000000005D0000-0x00000000005DF000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1968-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2284-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2284	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1968	2024-06-01_24f687cb099d03ce60045e7ef8848640_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 1968 wrote to memory of 2284	1968	2024-06-01_24f687cb099d03ce60045e7ef8848640_cryptolocker.exe	28
PID 1968 wrote to memory of 2284	1968	2024-06-01_24f687cb099d03ce60045e7ef8848640_cryptolocker.exe	28
PID 1968 wrote to memory of 2284	1968	2024-06-01_24f687cb099d03ce60045e7ef8848640_cryptolocker.exe	28
PID 1968 wrote to memory of 2284	1968	2024-06-01_24f687cb099d03ce60045e7ef8848640_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-01_24f687cb099d03ce60045e7ef8848640_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_24f687cb099d03ce60045e7ef8848640_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2284

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
49KB

MD5
f593ca920e86530593474b910ff1de96

SHA1
a173c8dbf5143ff0cf2fd33bb0d3fdf72144a8b8

SHA256
1f67e37ad65dc0d2d18ea9fef757d056f2efcc849247e1e919f2fa77c4e05622

SHA512
a27648b29ebf8c3b48223106531928e1c03ca56f70af2220a0d167dafe737362c2bd349d6a4f7b7960ec88c4ad1127fbc49ff9788f0adaabb0aa41ef580e42e3

Download Submit
memory/1968-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1968-1-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1968-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/1968-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1968-13-0x00000000005D0000-0x00000000005DF000-memory.dmp

Filesize
60KB

Download
memory/1968-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2284-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2284-19-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2284-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download