dfcb28e903eb8a652057502ab6f21cc22d50e1dea044d45d3c9be8d8ce3d5781

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
25/01/2024, 14:41

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General

Target

2024-01-25_778d956afeb4a5397c6ab963dc41fbee_cryptolocker.exe
Size

53KB
MD5

778d956afeb4a5397c6ab963dc41fbee
SHA1

ee0db3e2fc254b882fad474d71a29b6b089bcce5
SHA256

dfcb28e903eb8a652057502ab6f21cc22d50e1dea044d45d3c9be8d8ce3d5781
SHA512

a7da7590e35348ae8b847ee8fa13026709399bab93e2c2aeb7932ac72da25de2faf804a05d110315fa43ef203dc091744bff6690776621df97401afcf9775185
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylSV/Cdz:79mqyNhQMOtEvwDpjBPY7xv3g86

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2116-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000900000001222a-11.dat	CryptoLocker_rule2
behavioral1/memory/2116-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1508-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2116-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000900000001222a-11.dat	CryptoLocker_set1
behavioral1/memory/2116-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1508-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1508	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2116	2024-01-25_778d956afeb4a5397c6ab963dc41fbee_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 2116 wrote to memory of 1508	2116	2024-01-25_778d956afeb4a5397c6ab963dc41fbee_cryptolocker.exe	28
PID 2116 wrote to memory of 1508	2116	2024-01-25_778d956afeb4a5397c6ab963dc41fbee_cryptolocker.exe	28
PID 2116 wrote to memory of 1508	2116	2024-01-25_778d956afeb4a5397c6ab963dc41fbee_cryptolocker.exe	28
PID 2116 wrote to memory of 1508	2116	2024-01-25_778d956afeb4a5397c6ab963dc41fbee_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-25_778d956afeb4a5397c6ab963dc41fbee_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_778d956afeb4a5397c6ab963dc41fbee_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1508

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
53KB

MD5
d8ec882e4926215601d72089fb7ebf27

SHA1
e0493c54f92e2c0356bb2b2395aed677ea2a0a2c

SHA256
115f0c0f1b98d1048a6fc277ba449d3b4e6e10c500b51d6947e5e0a058b714da

SHA512
4c39692e93bed112a8400ead1757500b47d0258b628688d3f1feb0e3b5fa89bddc25334bdf0da655e41242f26935c1b9a5c081a7d173ca7c07ec37d8a685d4de

Download Submit
memory/1508-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1508-18-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/1508-20-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2116-0-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2116-1-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2116-3-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2116-2-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2116-14-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download