5b26f7cbba79d635cee908a77151a297761cd5e2e963bd76f0327b6a7b485397

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
29-04-2024 05:23

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General

Target

2024-04-29_111f3fc5e97ea646e0dc1c7c8ba2865f_cryptolocker.exe
Size

39KB
MD5

111f3fc5e97ea646e0dc1c7c8ba2865f
SHA1

5f28905cf774dfdb24372fa3f7c09a1a6bdbf4e0
SHA256

5b26f7cbba79d635cee908a77151a297761cd5e2e963bd76f0327b6a7b485397
SHA512

c90cd6d7b09f2dd9dcc89a3231ee7ded06ca55bebc9f3c0e6c29a47a7e7d9dd2bb207f55cf140cf9d7e6c9d7b2d52b1726db9f4279dde4a7867ab68fa75d4ffe
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLNWR:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2784-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00090000000141c0-11.dat	CryptoLocker_rule2
behavioral1/memory/3048-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2784-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2784-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00090000000141c0-11.dat	CryptoLocker_set1
behavioral1/memory/3048-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2784-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3048	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2784	2024-04-29_111f3fc5e97ea646e0dc1c7c8ba2865f_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 2784 wrote to memory of 3048	2784	2024-04-29_111f3fc5e97ea646e0dc1c7c8ba2865f_cryptolocker.exe	28
PID 2784 wrote to memory of 3048	2784	2024-04-29_111f3fc5e97ea646e0dc1c7c8ba2865f_cryptolocker.exe	28
PID 2784 wrote to memory of 3048	2784	2024-04-29_111f3fc5e97ea646e0dc1c7c8ba2865f_cryptolocker.exe	28
PID 2784 wrote to memory of 3048	2784	2024-04-29_111f3fc5e97ea646e0dc1c7c8ba2865f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-29_111f3fc5e97ea646e0dc1c7c8ba2865f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_111f3fc5e97ea646e0dc1c7c8ba2865f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2784
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3048

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
40KB

MD5
65e86cbdb7c178f3be5d4f1ed5ef19f1

SHA1
83d5baabe80114b2a78c4ffce57f09fe051f48c1

SHA256
4d1e00dd1a6448fb6e098d45b4cb4ff9bbf53d9c9c6c0055d3f169d24b3f4a45

SHA512
8b5659dc368212e9000a3365fa17b411752abf14bbfe1b2510e391bd26c858b232abb033f7d8a726e19bbe003568ec4ba744377981176b786ae075b157b23e52

Download Submit
memory/2784-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2784-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2784-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2784-2-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2784-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3048-18-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/3048-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3048-25-0x00000000001E0000-0x00000000001E6000-memory.dmp

Filesize
24KB

Download