b0affe63d058038119f7bbeb47503a0c5f97322c3aba63d13ac6bbd760f4657f

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
29/01/2024, 12:24

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General

Target

2024-01-29_2866e789939e5bbca7704be72035c85a_cryptolocker.exe
Size

53KB
MD5

2866e789939e5bbca7704be72035c85a
SHA1

0d3fc5d95dc01bdc217df111783aa30d9408149a
SHA256

b0affe63d058038119f7bbeb47503a0c5f97322c3aba63d13ac6bbd760f4657f
SHA512

8734b9d423f2fc068f0731f5e12c058232b7b355392cb2f42297bde4bcce29f69ae306b0d465dd2967a5ea4cdc5231a88bc802c7c6ebe3a426c775652e178ccf
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylSV/Cdr:79mqyNhQMOtEvwDpjBPY7xv3g8q

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1936-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001224d-11.dat	CryptoLocker_rule2
behavioral1/memory/1936-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2064-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1936-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001224d-11.dat	CryptoLocker_set1
behavioral1/memory/1936-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2064-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2064	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1936	2024-01-29_2866e789939e5bbca7704be72035c85a_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 1936 wrote to memory of 2064	1936	2024-01-29_2866e789939e5bbca7704be72035c85a_cryptolocker.exe	28
PID 1936 wrote to memory of 2064	1936	2024-01-29_2866e789939e5bbca7704be72035c85a_cryptolocker.exe	28
PID 1936 wrote to memory of 2064	1936	2024-01-29_2866e789939e5bbca7704be72035c85a_cryptolocker.exe	28
PID 1936 wrote to memory of 2064	1936	2024-01-29_2866e789939e5bbca7704be72035c85a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-29_2866e789939e5bbca7704be72035c85a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_2866e789939e5bbca7704be72035c85a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1936
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2064

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
54KB

MD5
c9408b1ed94079a5969f69859a106882

SHA1
235eda3d59882e3745e15817eb59a139fefb51b3

SHA256
ad458104bd925f41ef47b283498b4c16c1643fdc0609483801a4ec18812449e1

SHA512
5bdc3bebb43b9bdf5c9471c12fdd1d4a3dc894874e2922687bac596f1b7826f705e934622e3c78a7cbe74e3ba739b28822f4b7b779aa3dcdace225c09876b96e

Download Submit
memory/1936-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1936-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1936-3-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1936-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/1936-14-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2064-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2064-19-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2064-18-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download