3af67795d981618e9d5623e15d86aff022c545c7814b6a40d3313809b104f8d3

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
12-02-2024 17:54

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General

Target

2024-02-12_e5a55d1a1176a509b8df6219f6a754ec_cryptolocker.exe
Size

37KB
MD5

e5a55d1a1176a509b8df6219f6a754ec
SHA1

0fa67cc7160ee949289ca757af9c13ebe8f17826
SHA256

3af67795d981618e9d5623e15d86aff022c545c7814b6a40d3313809b104f8d3
SHA512

a1339cbcf23a98a98e4f7518de6b474773aebd8c3c9ce2d7bedd738044034fa73d252e5c3db8e6c347c7499ae504aaa043ca91422366bd577f3aa1fa15208ecb
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLUK:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkL9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1752-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2804-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1752-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1752-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2804-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1752-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2804 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-02-12_e5a55d1a1176a509b8df6219f6a754ec_cryptolocker.exe

pid process

1752 2024-02-12_e5a55d1a1176a509b8df6219f6a754ec_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2804	asih.exe

pid	process
1752	2024-02-12_e5a55d1a1176a509b8df6219f6a754ec_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-02-12_e5a55d1a1176a509b8df6219f6a754ec_cryptolocker.exe

description	pid	process	target process
PID 1752 wrote to memory of 2804	1752	2024-02-12_e5a55d1a1176a509b8df6219f6a754ec_cryptolocker.exe	asih.exe
PID 1752 wrote to memory of 2804	1752	2024-02-12_e5a55d1a1176a509b8df6219f6a754ec_cryptolocker.exe	asih.exe
PID 1752 wrote to memory of 2804	1752	2024-02-12_e5a55d1a1176a509b8df6219f6a754ec_cryptolocker.exe	asih.exe
PID 1752 wrote to memory of 2804	1752	2024-02-12_e5a55d1a1176a509b8df6219f6a754ec_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_e5a55d1a1176a509b8df6219f6a754ec_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_e5a55d1a1176a509b8df6219f6a754ec_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1752

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2804

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

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

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

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

Filesize
37KB

MD5
323f19aeca15936427239323cdc74c2e

SHA1
971ed20edd9877603cbfc0da0c6e8ac39567f3aa

SHA256
bb1965d6ea2bb42f23e4bef5bdd3e576e0aa18b7ae005b93fdf5dfea5fe4617c

SHA512
7f71c8e71432bb9c09d650fb16201c006924f06902aa6215c61f48f9a66c1b3afc7de8722f3399324e704c69f2929778edfbcd7825646edc380cd7f6ac9597de

Download Submit
memory/1752-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1752-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1752-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1752-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1752-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2804-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2804-18-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download