djvu | 43df4500189c83808a119ee66ee8b77488619eed618316d937461e602cdc156d

General

Target

5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe
Size

710KB
MD5

f8ef98bbaff6ac82dacde20ee90bfa55
SHA1

65761535a352bfeece2a708eaf6a329fc544872e
SHA256

5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de
SHA512

21618fa54b094fa37deeed5ef7e2fba6da13e57dc36119a5fe502e855a81fa5c9530b45a8be1a0333c8aa0ee862eb07f5c4af1c622b79bbfa8b3e4a3285790dd
SSDEEP

12288:brr/q8UczPPvwkvhfloghhbUkxMEpLJ+GXJwvnvO2BfYV3yXL2QCd:bIqwkpf6gUAGO21O3yCQA

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://vjsi.top/nddddhsspen6/get.php

Attributes

extension
.nobu
offline_id
YEy9XNzIuKSJ9bVw38Nvhm3G1ggaNsF2HShNYFt1
payload_url
http://vjsi.top/files/penelop/updatewin1.exe

http://vjsi.top/files/penelop/updatewin2.exe

http://vjsi.top/files/penelop/updatewin.exe

http://vjsi.top/files/penelop/3.exe

http://vjsi.top/files/penelop/4.exe

http://vjsi.top/files/penelop/5.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-j3hj0RjttJ 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: 0269Orjk

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 11 IoCs

resource	yara_rule
behavioral1/memory/1628-2-0x0000000000560000-0x000000000067A000-memory.dmp	family_djvu
behavioral1/memory/1628-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1628-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1628-23-0x0000000000560000-0x000000000067A000-memory.dmp	family_djvu
behavioral1/memory/1628-21-0x0000000000400000-0x000000000055B000-memory.dmp	family_djvu
behavioral1/memory/2776-27-0x0000000000400000-0x000000000055B000-memory.dmp	family_djvu
behavioral1/memory/2776-28-0x0000000000400000-0x000000000055B000-memory.dmp	family_djvu
behavioral1/memory/2776-42-0x0000000000400000-0x000000000055B000-memory.dmp	family_djvu
behavioral1/memory/2776-44-0x0000000000400000-0x000000000055B000-memory.dmp	family_djvu
behavioral1/memory/2776-47-0x0000000000400000-0x000000000055B000-memory.dmp	family_djvu
behavioral1/memory/1536-73-0x0000000000400000-0x000000000055B000-memory.dmp	family_djvu

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

Executes dropped EXE 1 IoCs

pid	Process
1536	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2792	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-1-5-21-677481364-2238709445-1347953534-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\5323b280-a9f4-4b9a-9097-1f1b411e4c45\\5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe\" --AutoStart"	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe

Looks up external IP address via web service 4 IoCs

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

flow	ioc
21	api.2ip.ua
4	api.2ip.ua
5	api.2ip.ua
9	api.2ip.ua

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1628	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe
1628	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe
2776	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe
2776	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe
1536	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe
1536	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 2792	1628	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe	31
PID 1628 wrote to memory of 2792	1628	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe	31
PID 1628 wrote to memory of 2792	1628	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe	31
PID 1628 wrote to memory of 2792	1628	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe	31
PID 1628 wrote to memory of 2776	1628	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe	32
PID 1628 wrote to memory of 2776	1628	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe	32
PID 1628 wrote to memory of 2776	1628	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe	32
PID 1628 wrote to memory of 2776	1628	5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe	32
PID 884 wrote to memory of 1536	884	taskeng.exe	39
PID 884 wrote to memory of 1536	884	taskeng.exe	39
PID 884 wrote to memory of 1536	884	taskeng.exe	39
PID 884 wrote to memory of 1536	884	taskeng.exe	39

C:\Users\Admin\AppData\Local\Temp\5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe
"C:\Users\Admin\AppData\Local\Temp\5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1628
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\5323b280-a9f4-4b9a-9097-1f1b411e4c45" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:2792
- C:\Users\Admin\AppData\Local\Temp\5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe
  "C:\Users\Admin\AppData\Local\Temp\5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2776

C:\Windows\system32\taskeng.exe
taskeng.exe {BA86572B-8085-472E-B934-39EE2290CCE8} S-1-5-21-677481364-2238709445-1347953534-1000:JXXXDSWS\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:884
- C:\Users\Admin\AppData\Local\5323b280-a9f4-4b9a-9097-1f1b411e4c45\5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe
  C:\Users\Admin\AppData\Local\5323b280-a9f4-4b9a-9097-1f1b411e4c45\5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe --Task
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1536

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
1KB

MD5
c9be626e9715952e9b70f92f912b9787

SHA1
aa2e946d9ad9027172d0d321917942b7562d6abe

SHA256
c13e8d22800c200915f87f71c31185053e4e60ca25de2e41e160e09cd2d815d4

SHA512
7581b7c593785380e9db3ae760af85c1a889f607a3cd2aa5a2695a0e5a0fe8ee751578e88f7d8c997faeda804e2fc2655d859bee2832eace526ed4379edaa3f5

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

Filesize
436B

MD5
971c514f84bba0785f80aa1c23edfd79

SHA1
732acea710a87530c6b08ecdf32a110d254a54c8

SHA256
f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

SHA512
43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
174B

MD5
4070b30cd71f71d809a79e92ec6c0723

SHA1
f7b2a72ab4903ee2f4fdc7b5e1423173592089bf

SHA256
a6518988dd33de19bbb9d0c762e5f044bb22f56938042301b0f0f7553d8b64fa

SHA512
50993089af8b1c506280b02dbe183e8e0b882d385555220dbe368625307b0cdf1714b99bbe9d8b8b5485fd3388e6ddb8172aeb1b155675fb26d3c6a3a3dc565a

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

Filesize
170B

MD5
33af9ae13335a4bc7ab70c47c75779ed

SHA1
e3ad7e310ad3825d377fdca16412417c3db46bdb

SHA256
119505c28fac54a1646d5b66f3a9d334d33a3be1810c1be2d2e33b5217efbb94

SHA512
38866634918746e13d5acf4b2668480432925c0bad560d92613c71641ada1d0a5209f84fdc2e9e110efbf8501d9fc4298fcc2dcf4430680df952787d36c8eba7

Download Submit
C:\Users\Admin\AppData\Local\5323b280-a9f4-4b9a-9097-1f1b411e4c45\5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de.exe

Filesize
710KB

MD5
f8ef98bbaff6ac82dacde20ee90bfa55

SHA1
65761535a352bfeece2a708eaf6a329fc544872e

SHA256
5af0f5b0bada5b7aaa681eddebc47734267af06eb39610590a625315f449d4de

SHA512
21618fa54b094fa37deeed5ef7e2fba6da13e57dc36119a5fe502e855a81fa5c9530b45a8be1a0333c8aa0ee862eb07f5c4af1c622b79bbfa8b3e4a3285790dd

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabA785.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar69FA.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/1536-73-0x0000000000400000-0x000000000055B000-memory.dmp

Filesize
1.4MB

Download
memory/1536-59-0x00000000002D0000-0x0000000000361000-memory.dmp

Filesize
580KB

Download
memory/1628-21-0x0000000000400000-0x000000000055B000-memory.dmp

Filesize
1.4MB

Download
memory/1628-22-0x0000000000280000-0x0000000000311000-memory.dmp

Filesize
580KB

Download
memory/1628-23-0x0000000000560000-0x000000000067A000-memory.dmp

Filesize
1.1MB

Download
memory/1628-0-0x0000000000280000-0x0000000000311000-memory.dmp

Filesize
580KB

Download
memory/1628-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1628-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1628-2-0x0000000000560000-0x000000000067A000-memory.dmp

Filesize
1.1MB

Download
memory/1628-1-0x0000000000280000-0x0000000000311000-memory.dmp

Filesize
580KB

Download
memory/2776-28-0x0000000000400000-0x000000000055B000-memory.dmp

Filesize
1.4MB

Download
memory/2776-42-0x0000000000400000-0x000000000055B000-memory.dmp

Filesize
1.4MB

Download
memory/2776-44-0x0000000000400000-0x000000000055B000-memory.dmp

Filesize
1.4MB

Download
memory/2776-47-0x0000000000400000-0x000000000055B000-memory.dmp

Filesize
1.4MB

Download
memory/2776-26-0x0000000000400000-0x000000000055B000-memory.dmp

Filesize
1.4MB

Download
memory/2776-27-0x0000000000400000-0x000000000055B000-memory.dmp

Filesize
1.4MB

Download
memory/2776-25-0x0000000000310000-0x00000000003A1000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads