djvu | 95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4

Resubmissions

24/12/2023, 18:24

231224-w112ksffdr10

24/12/2023, 18:21

231224-wzcycsfchm10

07/11/2023, 17:16

231107-vs31jadh7310

Analysis

max time kernel
138s
max time network
172s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
07/11/2023, 17:16

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General

Target
95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe
Size 765KB
Sample231107-vs31jadh73
SHA256 95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4
MD5 52f22c2a5b2c339e75f176bf5bfcb3f3
SHA1 0a3b96aa59d5eda04c731bfb9c2ba7fef997d1b9
SHA512 ec5f24367c46ff558110022ad8e1106fe5d1d9b9f94cf423b0cd1e1cd7d5ee3111e16cc12ccf3d6e65c5a5d5358691726172e33fb6338e1b7291be9566766da8
SSDEEP 12288:mokzmesNcOJCG4jm2E2SLZJsiXlg8XGB2P3yo1jaUPC4t56ha6DJof5:izk/QDo2SVJsylBXjVNPyvu
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.jzeq
offline_id
4FMaMDK6uqPZOxJj64677pqiSGF54A1Dam9zfUt1
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-TAbs6oTGSU 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: 0821ASdw

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral1/memory/4168-2-0x0000000002630000-0x000000000274B000-memory.dmp	family_djvu
behavioral1/memory/4876-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4876-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4876-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4876-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4876-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3132-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3132-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3132-31-0x0000000000400000-0x0000000000537000-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-1-5-21-3125601242-331447593-1512828465-1000\Control Panel\International\Geo\Nation	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
580	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-1-5-21-3125601242-331447593-1512828465-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\94d8d0ba-3a5d-439e-88c5-04e88d4186c3\\95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe\" --AutoStart"	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.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
70	api.2ip.ua
69	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4168 set thread context of 4876	4168	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	94
PID 760 set thread context of 3132	760	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	109

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
4360	3132	WerFault.exe	109

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4876	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe
4876	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4168 wrote to memory of 4876	4168	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	94
PID 4168 wrote to memory of 4876	4168	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	94
PID 4168 wrote to memory of 4876	4168	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	94
PID 4168 wrote to memory of 4876	4168	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	94
PID 4168 wrote to memory of 4876	4168	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	94
PID 4168 wrote to memory of 4876	4168	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	94
PID 4168 wrote to memory of 4876	4168	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	94
PID 4168 wrote to memory of 4876	4168	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	94
PID 4168 wrote to memory of 4876	4168	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	94
PID 4168 wrote to memory of 4876	4168	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	94
PID 4876 wrote to memory of 580	4876	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	98
PID 4876 wrote to memory of 580	4876	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	98
PID 4876 wrote to memory of 580	4876	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	98
PID 4876 wrote to memory of 760	4876	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	102
PID 4876 wrote to memory of 760	4876	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	102
PID 4876 wrote to memory of 760	4876	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	102
PID 760 wrote to memory of 3132	760	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	109
PID 760 wrote to memory of 3132	760	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	109
PID 760 wrote to memory of 3132	760	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	109
PID 760 wrote to memory of 3132	760	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	109
PID 760 wrote to memory of 3132	760	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	109
PID 760 wrote to memory of 3132	760	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	109
PID 760 wrote to memory of 3132	760	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	109
PID 760 wrote to memory of 3132	760	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	109
PID 760 wrote to memory of 3132	760	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	109
PID 760 wrote to memory of 3132	760	95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe	109

C:\Users\Admin\AppData\Local\Temp\95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe
"C:\Users\Admin\AppData\Local\Temp\95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4168
- C:\Users\Admin\AppData\Local\Temp\95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe
  "C:\Users\Admin\AppData\Local\Temp\95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4876
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\94d8d0ba-3a5d-439e-88c5-04e88d4186c3" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:580
- - C:\Users\Admin\AppData\Local\Temp\95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe
    "C:\Users\Admin\AppData\Local\Temp\95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:760
  - - C:\Users\Admin\AppData\Local\Temp\95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe
      "C:\Users\Admin\AppData\Local\Temp\95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      PID:3132
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3132 -s 568
        5⤵
        Program crash
        
        PID:4360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3132 -ip 3132
1⤵
PID:4144

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe

Path C:\Users\Admin\AppData\Local\94d8d0ba-3a5d-439e-88c5-04e88d4186c3\95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4.exe
Size 765KB
SHA256 95e9cb14d98addba28afd394f68a90d4500fa5396a6b27fdbe5024bd17f972b4
MD5 52f22c2a5b2c339e75f176bf5bfcb3f3
SHA1 0a3b96aa59d5eda04c731bfb9c2ba7fef997d1b9
SHA512 ec5f24367c46ff558110022ad8e1106fe5d1d9b9f94cf423b0cd1e1cd7d5ee3111e16cc12ccf3d6e65c5a5d5358691726172e33fb6338e1b7291be9566766da8
SSDEEP 12288:mokzmesNcOJCG4jm2E2SLZJsiXlg8XGB2P3yo1jaUPC4t56ha6DJof5:izk/QDo2SVJsylBXjVNPyvu
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/760-26-0x00000000009F0000-0x0000000000A86000-memory.dmp

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memory/3132-28-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3132-29-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3132-31-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4168-1-0x0000000002590000-0x0000000002625000-memory.dmp

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memory/4168-2-0x0000000002630000-0x000000000274B000-memory.dmp

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memory/4876-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4876-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4876-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4876-7-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4876-22-0x0000000000400000-0x0000000000537000-memory.dmp

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