5053133a1ac53aba928001fb45e634da55cea8ba1dcf3a38c21778520a689a67

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
25-01-2024 17:42

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General

Target

2024-01-25_1753e8d7da529a859f518fb1d9a28a0c_cryptolocker.exe
Size

59KB
MD5

1753e8d7da529a859f518fb1d9a28a0c
SHA1

587bc420e5859ff3d59f8c4178d912ec2cd45065
SHA256

5053133a1ac53aba928001fb45e634da55cea8ba1dcf3a38c21778520a689a67
SHA512

6653090ac61454dc425d03078a5134e5aaf46b6cac83c64269195774e74b4cad9527a78c7670af6a27e31f58a67aa65210df67b26375954792e4b7c1335d4935
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsM:BbdDmjr+OtEvwDpjM8U

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1684-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012251-11.dat	CryptoLocker_rule2
behavioral1/memory/1684-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2160-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1684-13-0x0000000000630000-0x0000000000640000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2160-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1684-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1684-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2160-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2160-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1684-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a000000012251-11.dat	UPX
behavioral1/memory/1684-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2160-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1684-13-0x0000000000630000-0x0000000000640000-memory.dmp	UPX
behavioral1/memory/2160-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid	Process
2160	asih.exe

Loads dropped DLL 1 IoCs

Processes:

2024-01-25_1753e8d7da529a859f518fb1d9a28a0c_cryptolocker.exe

pid	Process
1684	2024-01-25_1753e8d7da529a859f518fb1d9a28a0c_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

Processes:

2024-01-25_1753e8d7da529a859f518fb1d9a28a0c_cryptolocker.exe

description	pid	Process	procid_target
PID 1684 wrote to memory of 2160	1684	2024-01-25_1753e8d7da529a859f518fb1d9a28a0c_cryptolocker.exe	28
PID 1684 wrote to memory of 2160	1684	2024-01-25_1753e8d7da529a859f518fb1d9a28a0c_cryptolocker.exe	28
PID 1684 wrote to memory of 2160	1684	2024-01-25_1753e8d7da529a859f518fb1d9a28a0c_cryptolocker.exe	28
PID 1684 wrote to memory of 2160	1684	2024-01-25_1753e8d7da529a859f518fb1d9a28a0c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-25_1753e8d7da529a859f518fb1d9a28a0c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_1753e8d7da529a859f518fb1d9a28a0c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1684
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2160

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
59KB

MD5
ae19663d508c8f567ca208a433200def

SHA1
3a005aaa0369c3f87188d61320601e1975f698cf

SHA256
6dcd36d4c4a4bcba55f3164feb24960ed9fab34f1465888d8443879276203cf8

SHA512
00e3c67924f23c8f512e5a733f929d14ba76ecd7e1aaed9e70b567468d61ef2fc9a681f00c492edf3529c2bbe1cb2fca0c5ad62210f58efa4fa46b6eb3702377

Download Submit
memory/1684-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1684-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/1684-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1684-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1684-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1684-13-0x0000000000630000-0x0000000000640000-memory.dmp

Filesize
64KB

Download
memory/2160-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2160-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2160-20-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2160-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download