djvu | 1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59

General

Target

JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe
Size

779KB
MD5

1c5be280ecaf53a4b791583c8bce210a
SHA1

33f49723e454e91c416991308edddf14e905fcfc
SHA256

1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59
SHA512

63f26e5cc977e62983d9f80bada2ac262d5fedc4329f033acec0e8471a0ee5bdce90c6080e952a46bbdcc6a324267f47590285706ef13240f6a08cada303fe03
SSDEEP

12288:zzp8oxR1OqwfdKryREJ9gMSo+RX6XeS8MiZXEqEiqa1y:zlROqwQrPJQo+RMl8Mq3qa1y

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/raud/get.php

Attributes

extension
.rzml
offline_id
4OGfweO4lKfNTwKczrTWD8yTxQkyAGofoZhcOKt1
payload_url
http://colisumy.com/dl/build2.exe

http://zexeq.com/files/1/build3.exe
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-RX6ODkr7XJ Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0777AUSdjl

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/1988-1-0x00000000043D0000-0x00000000044EB000-memory.dmp	family_djvu
behavioral2/memory/5092-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5092-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5092-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5092-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5092-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4548-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4548-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4548-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2415528079-3794552930-4264847036-1000\Control Panel\International\Geo\Nation	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3752	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2415528079-3794552930-4264847036-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\1e8cc930-d6fe-43db-a9eb-eac11b2959e2\\JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe\" --AutoStart"	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
30	api.2ip.ua
31	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1988 set thread context of 5092	1988	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	87
PID 4388 set thread context of 4548	4388	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	91

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
404	4548	WerFault.exe	91

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5092	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe
5092	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1988 wrote to memory of 5092	1988	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	87
PID 1988 wrote to memory of 5092	1988	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	87
PID 1988 wrote to memory of 5092	1988	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	87
PID 1988 wrote to memory of 5092	1988	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	87
PID 1988 wrote to memory of 5092	1988	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	87
PID 1988 wrote to memory of 5092	1988	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	87
PID 1988 wrote to memory of 5092	1988	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	87
PID 1988 wrote to memory of 5092	1988	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	87
PID 1988 wrote to memory of 5092	1988	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	87
PID 1988 wrote to memory of 5092	1988	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	87
PID 5092 wrote to memory of 3752	5092	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	88
PID 5092 wrote to memory of 3752	5092	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	88
PID 5092 wrote to memory of 3752	5092	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	88
PID 5092 wrote to memory of 4388	5092	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	89
PID 5092 wrote to memory of 4388	5092	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	89
PID 5092 wrote to memory of 4388	5092	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	89
PID 4388 wrote to memory of 4548	4388	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	91
PID 4388 wrote to memory of 4548	4388	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	91
PID 4388 wrote to memory of 4548	4388	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	91
PID 4388 wrote to memory of 4548	4388	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	91
PID 4388 wrote to memory of 4548	4388	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	91
PID 4388 wrote to memory of 4548	4388	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	91
PID 4388 wrote to memory of 4548	4388	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	91
PID 4388 wrote to memory of 4548	4388	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	91
PID 4388 wrote to memory of 4548	4388	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	91
PID 4388 wrote to memory of 4548	4388	JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe	91

C:\Users\Admin\AppData\Local\Temp\JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe
"C:\Users\Admin\AppData\Local\Temp\JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Users\Admin\AppData\Local\Temp\JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe
  "C:\Users\Admin\AppData\Local\Temp\JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:5092
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\1e8cc930-d6fe-43db-a9eb-eac11b2959e2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3752
- - C:\Users\Admin\AppData\Local\Temp\JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe
    "C:\Users\Admin\AppData\Local\Temp\JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4388
  - - C:\Users\Admin\AppData\Local\Temp\JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe
      "C:\Users\Admin\AppData\Local\Temp\JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:4548
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4548 -s 568
        5⤵
        Program crash
        
        PID:404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4548 -ip 4548
1⤵
PID:1324

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\1e8cc930-d6fe-43db-a9eb-eac11b2959e2\JC_1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59.exe

Filesize
779KB

MD5
1c5be280ecaf53a4b791583c8bce210a

SHA1
33f49723e454e91c416991308edddf14e905fcfc

SHA256
1d4016343e1f3d63ba4327657dc401804ad7816fcb9a8a5f2e7d4129ad8b0a59

SHA512
63f26e5cc977e62983d9f80bada2ac262d5fedc4329f033acec0e8471a0ee5bdce90c6080e952a46bbdcc6a324267f47590285706ef13240f6a08cada303fe03

Download Submit
memory/1988-1-0x00000000043D0000-0x00000000044EB000-memory.dmp

Filesize
1.1MB

Download
memory/1988-0-0x0000000004240000-0x00000000042D1000-memory.dmp

Filesize
580KB

Download
memory/1988-3-0x0000000004240000-0x00000000042D1000-memory.dmp

Filesize
580KB

Download
memory/4388-17-0x0000000003F90000-0x0000000004021000-memory.dmp

Filesize
580KB

Download
memory/4548-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4548-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4548-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5092-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5092-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5092-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5092-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5092-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads