e95cc2307444ecd53c50abf7cdcbb25ea1bce6850ac3ed5cd988c923f3cf0939

Analysis

max time kernel
140s
max time network
143s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
24/05/2024, 13:30

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General

Target

2024-05-24_fa64b2944373f55f8816c6ef3d226853_cryptolocker.exe
Size

73KB
MD5

fa64b2944373f55f8816c6ef3d226853
SHA1

bc0a066ac49eb562651103201d42b5880a15d2e6
SHA256

e95cc2307444ecd53c50abf7cdcbb25ea1bce6850ac3ed5cd988c923f3cf0939
SHA512

c585fe991e74479b6cc63722ea87e3b91d0c5364b2f0e541673c1bb1a8ad27115558dfbffb0af11cb67f0f8ef9cc4de02760329b5fe3b3ba92bfc93a27cfbe6d
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs975:C4Q2c94OtEvwDpj4H8zs

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2176-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012279-11.dat	CryptoLocker_rule2
behavioral1/memory/2176-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1648-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/2176-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1648-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2176-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b000000012279-11.dat	UPX
behavioral1/memory/2176-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1648-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1648	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2176	2024-05-24_fa64b2944373f55f8816c6ef3d226853_cryptolocker.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2176-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b000000012279-11.dat	upx
behavioral1/memory/2176-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1648-25-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 2176 wrote to memory of 1648	2176	2024-05-24_fa64b2944373f55f8816c6ef3d226853_cryptolocker.exe	28
PID 2176 wrote to memory of 1648	2176	2024-05-24_fa64b2944373f55f8816c6ef3d226853_cryptolocker.exe	28
PID 2176 wrote to memory of 1648	2176	2024-05-24_fa64b2944373f55f8816c6ef3d226853_cryptolocker.exe	28
PID 2176 wrote to memory of 1648	2176	2024-05-24_fa64b2944373f55f8816c6ef3d226853_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-24_fa64b2944373f55f8816c6ef3d226853_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_fa64b2944373f55f8816c6ef3d226853_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1648

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\misid.exe

Filesize
73KB

MD5
835fcb943bda7daadd1efaa71c586779

SHA1
4e7d7b505dc70787f7daadc2f97c13ce61b4bf63

SHA256
940c04d6e027d1374d5664f93a9feada9c8b74f64ad20946e8b0106818fe2ad3

SHA512
a1ad19dc7ae19635d239aa4e2a79feee722ac39fa188b4f4c2b4d7a5d3574337497f8ec39ba05b2cad127f2215560b9cdb89ce48efad5abe6c4bee4756f514c9

Download Submit
memory/1648-18-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1648-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2176-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2176-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2176-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2176-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2176-16-0x0000000001D70000-0x0000000001D80000-memory.dmp

Filesize
64KB

Download
memory/2176-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download