c8767eba1a9f12feb70e86d4aa9b854589d0607b2c95ddf42a7ed2c977702b9e

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
17-02-2024 07:46

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General

Target

2024-02-17_a18d8b9238792a90c5ce29d5c9dff0bf_cryptolocker.exe
Size

97KB
MD5

a18d8b9238792a90c5ce29d5c9dff0bf
SHA1

ea4286e46c777c1cd684b3b2a25bd8d72388fd78
SHA256

c8767eba1a9f12feb70e86d4aa9b854589d0607b2c95ddf42a7ed2c977702b9e
SHA512

b1ad342ae307876b9d2c75cfe366df8ecb8b4fc87a549cd4fc95f29cf67b5b4c5c5187b7709d210461fe204126a40fa22e56ff8c1e64206b508e6534c2861440
SSDEEP

1536:26QFElP6n+gBQMOtEvwDpjQGYQbN/PKwNCJg:26a+2OtEvwDpjtzV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0007000000012287-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0007000000012287-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1432	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2216	2024-02-17_a18d8b9238792a90c5ce29d5c9dff0bf_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 2216 wrote to memory of 1432	2216	2024-02-17_a18d8b9238792a90c5ce29d5c9dff0bf_cryptolocker.exe	28
PID 2216 wrote to memory of 1432	2216	2024-02-17_a18d8b9238792a90c5ce29d5c9dff0bf_cryptolocker.exe	28
PID 2216 wrote to memory of 1432	2216	2024-02-17_a18d8b9238792a90c5ce29d5c9dff0bf_cryptolocker.exe	28
PID 2216 wrote to memory of 1432	2216	2024-02-17_a18d8b9238792a90c5ce29d5c9dff0bf_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-17_a18d8b9238792a90c5ce29d5c9dff0bf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_a18d8b9238792a90c5ce29d5c9dff0bf_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2216
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1432

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
97KB

MD5
dc05c54e13de6d475868d1ae467c16ac

SHA1
5ddb459a4ef85fc4007535d8d5c34eecc83743af

SHA256
3e46873ef80c8e0a1bc588769c0b00b39d15fcbef4e041fd4a143f5adda42f68

SHA512
df9fb3b40cf51bf0da4191593d38b718be95bda9a0b2bbc8dab47488dbd39530953a16298226abd32d99bb9393acdbded510d20d6a43d73cd8ebbf654c9d455f

Download Submit
memory/1432-17-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1432-15-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2216-0-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2216-1-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2216-2-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download