37567f9e3d3a8377cff676be6e4fab8b641e264fbc09277b5714a305c2e75925

General

Target

2024-01-28_1142eaa4e6ccccb6215ddbaa8fa2f028_cryptolocker.exe
Size

73KB
MD5

1142eaa4e6ccccb6215ddbaa8fa2f028
SHA1

638e1b39028e61fe3f342b85cfaeb09fb70ffaab
SHA256

37567f9e3d3a8377cff676be6e4fab8b641e264fbc09277b5714a305c2e75925
SHA512

28e0f7a4c879d99064cdd8f14f1d3197c433dfe7fb2bcdc5b14a04f4367692debe61791a7adc486c324d82300a3bc1d0d41c33224c07cb17987729cdd33db053
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdxPUxuR:T6a+rdOOtEvwDpjNtHPD

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2800-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012251-11.dat	CryptoLocker_rule2
behavioral1/memory/2800-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2056-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2800-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012251-11.dat	CryptoLocker_set1
behavioral1/memory/2800-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2056-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2800-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000012251-11.dat	UPX
behavioral1/memory/2800-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2056-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2056	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2800	2024-01-28_1142eaa4e6ccccb6215ddbaa8fa2f028_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2800-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c000000012251-11.dat	upx
behavioral1/memory/2800-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2056-25-0x0000000000500000-0x0000000000510000-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 2800 wrote to memory of 2056	2800	2024-01-28_1142eaa4e6ccccb6215ddbaa8fa2f028_cryptolocker.exe	28
PID 2800 wrote to memory of 2056	2800	2024-01-28_1142eaa4e6ccccb6215ddbaa8fa2f028_cryptolocker.exe	28
PID 2800 wrote to memory of 2056	2800	2024-01-28_1142eaa4e6ccccb6215ddbaa8fa2f028_cryptolocker.exe	28
PID 2800 wrote to memory of 2056	2800	2024-01-28_1142eaa4e6ccccb6215ddbaa8fa2f028_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-28_1142eaa4e6ccccb6215ddbaa8fa2f028_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_1142eaa4e6ccccb6215ddbaa8fa2f028_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2800
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2056

Network

DNS

emrlogistics.com

asih.exe

Remote address:

8.8.8.8:53

Request

emrlogistics.com

IN A

Response

emrlogistics.com

IN CNAME

traff-1.hugedomains.com

traff-1.hugedomains.com

IN CNAME

hdr-nlb9-41371129e8304c29.elb.us-east-1.amazonaws.com

hdr-nlb9-41371129e8304c29.elb.us-east-1.amazonaws.com

IN A

52.71.57.184

hdr-nlb9-41371129e8304c29.elb.us-east-1.amazonaws.com

IN A

54.209.32.212

52.71.57.184:443

emrlogistics.com

asih.exe

152 B
3
54.209.32.212:443

emrlogistics.com

asih.exe

152 B
3
52.71.57.184:443

emrlogistics.com

asih.exe

152 B
3
54.209.32.212:443

emrlogistics.com

asih.exe

152 B
3
52.71.57.184:443

emrlogistics.com

asih.exe

152 B
3
54.209.32.212:443

emrlogistics.com

asih.exe

152 B
3
52.71.57.184:443

emrlogistics.com

asih.exe

152 B
3
54.209.32.212:443

emrlogistics.com

asih.exe

52 B
1

8.8.8.8:53

emrlogistics.com

dns

asih.exe

62 B
192 B
1
1

DNS Request

emrlogistics.com

DNS Response

52.71.57.184

54.209.32.212

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

Replay Monitor

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Downloads

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

Filesize
74KB

MD5
6a4069dd4480d2c634f9e4f831086a4a

SHA1
0fd3c6675b1fd59b8c4ec127da5e6a6eb7950f10

SHA256
ba1cd424696979b5c1706c04b625945ac09d17cae169ff2f9ee9297a9f00ce95

SHA512
58ad319c0298bd6bef2c04140eb9bf735e90692c0de6d851b62163a2886e2147e5d82ef27a151a4adcb9d327117b4394bf163f00abfe9e6b3bbeed470e5b1316

Download Submit
memory/2056-24-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2056-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2800-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2800-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2800-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2800-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2800-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

DNS Request

DNS Response

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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