d485204ae8c7af8504a9e81c0c2b49530e401b40dc18bcc5e5e7bcddeb0d1316

Analysis

max time kernel
149s
max time network
155s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19/02/2024, 17:33

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General

Target

2024-02-19_71839a23c269db94fe3296be934bb300_cryptolocker.exe
Size

48KB
MD5

71839a23c269db94fe3296be934bb300
SHA1

defac298c8ab8bd4d073d4182f0a065e1b489cc4
SHA256

d485204ae8c7af8504a9e81c0c2b49530e401b40dc18bcc5e5e7bcddeb0d1316
SHA512

f14375466405bdf6f90572b4c2fcc7c6fdf5d945a5cc8fa37cf2f1c6784e1c4fa7c15af811b47e0a403e3e4436621489e50566d85890f2214d62df554a75cab1
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnUC54:79mqyNhQMOtEvwDpjBxe8xC54

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2000-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012238-11.dat	CryptoLocker_rule2
behavioral1/memory/2272-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2000-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2000-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000012238-11.dat	CryptoLocker_set1
behavioral1/memory/2272-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2000-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2272	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2000	2024-02-19_71839a23c269db94fe3296be934bb300_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 2000 wrote to memory of 2272	2000	2024-02-19_71839a23c269db94fe3296be934bb300_cryptolocker.exe	15
PID 2000 wrote to memory of 2272	2000	2024-02-19_71839a23c269db94fe3296be934bb300_cryptolocker.exe	15
PID 2000 wrote to memory of 2272	2000	2024-02-19_71839a23c269db94fe3296be934bb300_cryptolocker.exe	15
PID 2000 wrote to memory of 2272	2000	2024-02-19_71839a23c269db94fe3296be934bb300_cryptolocker.exe	15

C:\Users\Admin\AppData\Local\Temp\2024-02-19_71839a23c269db94fe3296be934bb300_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_71839a23c269db94fe3296be934bb300_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2000
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2272

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
51002ae087eb376ba7741e1bd60187a7

SHA1
e5315655fbe4c3bceac0cd3973324ac9bc0a7e34

SHA256
c93d2b6f3ef57359128ad5b1119d3775400684dc5f8db84288f08640cd0d7fda

SHA512
2ea588d4561d633a1a03ea91691af95a260c08730c2ecbfc3ad85e2964290728b80918cc3f53ae34e6e76f99e5bc06390f440034c29949fe8441e916a5d17a32

Download Submit
memory/2000-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2000-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2000-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2000-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2000-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2272-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2272-18-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2272-23-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download