341cb20dbeb83339f0ee3fd95cab65eee7541797c0926b1c9560001a4cf92143

General

Target

2024-03-08_44f0a9f911a2c79e3638da37db916003_cryptolocker.exe
Size

57KB
MD5

44f0a9f911a2c79e3638da37db916003
SHA1

a1df4e73c09e67d1cb9b9219b207da5b93c6d569
SHA256

341cb20dbeb83339f0ee3fd95cab65eee7541797c0926b1c9560001a4cf92143
SHA512

2e08ddc7f4488c2c6526f2984cccde743d33c9579b136eb841c2a7810543ed3ef85f682343461ee9ab0520be4955385d56c5136f574e9f8a2f9bf4f4dbf59b57
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7GoFwEt:xj+VGMOtEvwDpjubEgywEt

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2236-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001225e-11.dat	CryptoLocker_rule2
behavioral1/memory/2984-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2236-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2984-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2236-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001225e-11.dat	CryptoLocker_set1
behavioral1/memory/2984-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2236-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2984-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral1/memory/2236-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/files/0x000b00000001225e-11.dat	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2984-16-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2236-15-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2984-26-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

pid	Process
2984	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2236	2024-03-08_44f0a9f911a2c79e3638da37db916003_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 2236 wrote to memory of 2984	2236	2024-03-08_44f0a9f911a2c79e3638da37db916003_cryptolocker.exe	28
PID 2236 wrote to memory of 2984	2236	2024-03-08_44f0a9f911a2c79e3638da37db916003_cryptolocker.exe	28
PID 2236 wrote to memory of 2984	2236	2024-03-08_44f0a9f911a2c79e3638da37db916003_cryptolocker.exe	28
PID 2236 wrote to memory of 2984	2236	2024-03-08_44f0a9f911a2c79e3638da37db916003_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-08_44f0a9f911a2c79e3638da37db916003_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_44f0a9f911a2c79e3638da37db916003_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2984

Network

DNS

bestccc.com

misid.exe

Remote address:

8.8.8.8:53

Request

bestccc.com

IN A

Response

bestccc.com

IN A

103.14.121.240

103.14.121.240:443

bestccc.com

misid.exe

152 B
3
103.14.121.240:443

bestccc.com

misid.exe

152 B
3
103.14.121.240:443

bestccc.com

misid.exe

152 B
3
103.14.121.240:443

bestccc.com

misid.exe

152 B
3
103.14.121.240:443

bestccc.com

misid.exe

152 B
3
103.14.121.240:443

bestccc.com

misid.exe

152 B
3
103.14.121.240:443

bestccc.com

misid.exe

152 B
3
103.14.121.240:443

bestccc.com

misid.exe

52 B
1

8.8.8.8:53

bestccc.com

dns

misid.exe

57 B
73 B
1
1

DNS Request

bestccc.com

DNS Response

103.14.121.240

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
57KB

MD5
b3f89404d227eb10f0790e9f1fc50d8c

SHA1
f3833b7b665a8916c7d47adc475882225dc1c7a7

SHA256
8c26faeea8a3d0fa46940afa175f275a309cc0412aad8f7a10a8e9acf2206f72

SHA512
018503ab337c1a62a460b1fba7e4ebe8e6cdfeed63bf81b5ddecc27d85f5fe257d312495cfac108a6b593c1fb7b4fd4888df24324cf7bd8f6ade097e1cca73d3

Download Submit
memory/2236-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2236-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2236-2-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2236-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2236-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2984-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2984-18-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2984-20-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2984-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

DNS Request

DNS Response

MITRE ATT&CK Enterprise v15

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