djvu | 97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc

General

Target

97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe
Size

738KB
MD5

a728ffeedadb894aa1db6c01e9e3920f
SHA1

3a00d95c56cb353486a4c7deeebf33e13951428d
SHA256

97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc
SHA512

74c7b08285fe94d90239ac8781687f89ec9da57045a612de5cac1a895eee3bf037e24a1ca5a5491f44ba5892ea06a4a6f542c6e53eeece20531ddfd6ed3d2bcd
SSDEEP

12288:NoQ9ym7sbNqZhrTX3qXqh4n8gxXuJSTCZoZmoowiA1aWDY1e2SSPiNN:NoQcm/qXqh4nJXOPkLionDPk2N

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/test1/get.php

Attributes

extension
.wwpl
offline_id
LtYnlJvK0hICyOCeum6Tv4pbia9jcIGHVgA3Xht1
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-xoUXGr6cqT 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: 0786JOsie

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 10 IoCs

resource	yara_rule
behavioral2/memory/1676-1-0x0000000002320000-0x000000000243B000-memory.dmp	family_djvu
behavioral2/memory/4056-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4056-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4056-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4056-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4056-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4056-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3084-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3084-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3084-26-0x0000000000400000-0x0000000000537000-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-1-5-21-1045988481-1457812719-2617974652-1000\Control Panel\International\Geo\Nation	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2028	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-1-5-21-1045988481-1457812719-2617974652-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\53ee8169-bceb-4fb0-acd3-931dec043476\\97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe\" --AutoStart"	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.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
24	api.2ip.ua
23	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1676 set thread context of 4056	1676	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	84
PID 5044 set thread context of 3084	5044	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	92

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
1148	3084	WerFault.exe	92

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4056	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe
4056	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1676 wrote to memory of 4056	1676	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	84
PID 1676 wrote to memory of 4056	1676	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	84
PID 1676 wrote to memory of 4056	1676	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	84
PID 1676 wrote to memory of 4056	1676	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	84
PID 1676 wrote to memory of 4056	1676	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	84
PID 1676 wrote to memory of 4056	1676	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	84
PID 1676 wrote to memory of 4056	1676	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	84
PID 1676 wrote to memory of 4056	1676	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	84
PID 1676 wrote to memory of 4056	1676	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	84
PID 1676 wrote to memory of 4056	1676	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	84
PID 4056 wrote to memory of 2028	4056	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	85
PID 4056 wrote to memory of 2028	4056	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	85
PID 4056 wrote to memory of 2028	4056	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	85
PID 4056 wrote to memory of 5044	4056	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	89
PID 4056 wrote to memory of 5044	4056	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	89
PID 4056 wrote to memory of 5044	4056	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	89
PID 5044 wrote to memory of 3084	5044	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	92
PID 5044 wrote to memory of 3084	5044	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	92
PID 5044 wrote to memory of 3084	5044	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	92
PID 5044 wrote to memory of 3084	5044	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	92
PID 5044 wrote to memory of 3084	5044	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	92
PID 5044 wrote to memory of 3084	5044	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	92
PID 5044 wrote to memory of 3084	5044	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	92
PID 5044 wrote to memory of 3084	5044	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	92
PID 5044 wrote to memory of 3084	5044	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	92
PID 5044 wrote to memory of 3084	5044	97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe	92

C:\Users\Admin\AppData\Local\Temp\97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe
"C:\Users\Admin\AppData\Local\Temp\97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1676
- C:\Users\Admin\AppData\Local\Temp\97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe
  "C:\Users\Admin\AppData\Local\Temp\97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4056
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\53ee8169-bceb-4fb0-acd3-931dec043476" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2028
- - C:\Users\Admin\AppData\Local\Temp\97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe
    "C:\Users\Admin\AppData\Local\Temp\97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:5044
  - - C:\Users\Admin\AppData\Local\Temp\97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe
      "C:\Users\Admin\AppData\Local\Temp\97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:3084
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3084 -s 568
        5⤵
        Program crash
        
        PID:1148

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3084 -ip 3084
1⤵
PID:2548

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\53ee8169-bceb-4fb0-acd3-931dec043476\97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc.exe

Filesize
738KB

MD5
a728ffeedadb894aa1db6c01e9e3920f

SHA1
3a00d95c56cb353486a4c7deeebf33e13951428d

SHA256
97f5ba88957bcddbe310c6636e508b4621834955e2177d8d4bc9eb7faa90e2dc

SHA512
74c7b08285fe94d90239ac8781687f89ec9da57045a612de5cac1a895eee3bf037e24a1ca5a5491f44ba5892ea06a4a6f542c6e53eeece20531ddfd6ed3d2bcd

Download Submit
memory/1676-1-0x0000000002320000-0x000000000243B000-memory.dmp

Filesize
1.1MB

Download
memory/1676-4-0x00000000021E0000-0x0000000002271000-memory.dmp

Filesize
580KB

Download
memory/1676-0-0x00000000021E0000-0x0000000002271000-memory.dmp

Filesize
580KB

Download
memory/3084-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3084-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3084-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4056-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4056-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4056-18-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4056-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4056-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4056-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5044-21-0x0000000002170000-0x0000000002201000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads