6c03920c7db4f31c650277156ca45d89bf04e458ff4e985b4edb8e6e6f8d08cd

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
26/04/2024, 04:46

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General

Target

2024-04-26_67e82366d39213791225585a671162e6_cryptolocker.exe
Size

47KB
MD5

67e82366d39213791225585a671162e6
SHA1

5ee81c5068f4b0c6e968d1169bf778e098279e15
SHA256

6c03920c7db4f31c650277156ca45d89bf04e458ff4e985b4edb8e6e6f8d08cd
SHA512

c7b226c1669e6cee63e7890736d8d7dfa73ae6bf05ca5a03a20bb3367bf4056e8baafd8bf62c81abf3eb55b997f71b48482ad1d9f4d8a948f328f50d07867c6d
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpkcs:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfs

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2328-1-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2328-14-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2540-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001224e-15.dat	CryptoLocker_rule2
behavioral1/memory/2540-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2328-1-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2328-14-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2540-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001224e-15.dat	CryptoLocker_set1
behavioral1/memory/2540-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2540	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2328	2024-04-26_67e82366d39213791225585a671162e6_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 2328 wrote to memory of 2540	2328	2024-04-26_67e82366d39213791225585a671162e6_cryptolocker.exe	28
PID 2328 wrote to memory of 2540	2328	2024-04-26_67e82366d39213791225585a671162e6_cryptolocker.exe	28
PID 2328 wrote to memory of 2540	2328	2024-04-26_67e82366d39213791225585a671162e6_cryptolocker.exe	28
PID 2328 wrote to memory of 2540	2328	2024-04-26_67e82366d39213791225585a671162e6_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-26_67e82366d39213791225585a671162e6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_67e82366d39213791225585a671162e6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2328
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2540

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

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
47KB

MD5
53532db3fced98ca0df26d46e6ac13c5

SHA1
c7f3a4b2341933f17dee421a71bbf2c828ffbc38

SHA256
57b8fc3eb00a32dd6684ce5688c5d46865e91c0134177d2b1418eff533ee75bb

SHA512
e8262d9a7f74770c67a85a83a1122eeca170866e0819f2846353222d935fb0805f9c61cc985e85e3b0d263847bcda7196f284cb565b547c57f0f37953e104633

Download Submit
memory/2328-1-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2328-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2328-2-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2328-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2328-14-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2540-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2540-19-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2540-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2540-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download