4f97c35cb6101e48c1b1073d0e9729426dad3f225da3551328fcb56e928ebdec

General

Target

2024-04-09_1e5c64084733f9d7c5b5493a26bbdecc_cryptolocker.exe
Size

52KB
MD5

1e5c64084733f9d7c5b5493a26bbdecc
SHA1

732f41005ef062ab17dcd46d2334c92ff4b8534d
SHA256

4f97c35cb6101e48c1b1073d0e9729426dad3f225da3551328fcb56e928ebdec
SHA512

0bf6e6e5d87858ffd962fa817976ea86912fc62becbcccac1cfbe46a45e9bfb326d0b7718868eb75bbc91400626bc708b39d65a7c7d053d312dcae1ac1785139
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb6ImpyeW:BbdDmjr+OtEvwDpjME

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2200-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000012248-16.dat	CryptoLocker_rule2
behavioral1/memory/2180-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2200-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2180-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2180-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2200-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2180-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2200-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x0009000000012248-16.dat	UPX
behavioral1/memory/2180-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2200-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2180-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2180	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2200	2024-04-09_1e5c64084733f9d7c5b5493a26bbdecc_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 2200 wrote to memory of 2180	2200	2024-04-09_1e5c64084733f9d7c5b5493a26bbdecc_cryptolocker.exe	28
PID 2200 wrote to memory of 2180	2200	2024-04-09_1e5c64084733f9d7c5b5493a26bbdecc_cryptolocker.exe	28
PID 2200 wrote to memory of 2180	2200	2024-04-09_1e5c64084733f9d7c5b5493a26bbdecc_cryptolocker.exe	28
PID 2200 wrote to memory of 2180	2200	2024-04-09_1e5c64084733f9d7c5b5493a26bbdecc_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-09_1e5c64084733f9d7c5b5493a26bbdecc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-09_1e5c64084733f9d7c5b5493a26bbdecc_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2200
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2180

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

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

Filesize
52KB

MD5
21f433bb1d00ae02ba52b7823d8109c1

SHA1
cc018683ed549fe7d13073d26fab73d147528690

SHA256
c1b8dfa36ec4a8a28846dc50de9ef84e90d835112dbe66bcb55b79e9cd04c8c4

SHA512
c94ea3dd118c3a0a0cd0ea9f56cadbb9e271056bdda39f8cd675ba8df65dd2aa66f58d04112985dbf0c5371a912be9cb83ac0cd48fd49b09932d7c61f5c62f71

Download Submit
memory/2180-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2180-22-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2180-19-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2180-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2200-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2200-1-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2200-3-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2200-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2200-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2200-13-0x0000000001F60000-0x0000000001F70000-memory.dmp

Filesize
64KB

Download
memory/2200-28-0x0000000001F60000-0x0000000001F70000-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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