djvu | 0bdb5e571aefdfb8c27968b20aee1dbf0ec2ea1124f49efeec79a325f010923b

Analysis

max time kernel
149s
max time network
48s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
09/07/2024, 05:45

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General

Target

2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe
Size

809KB
MD5

2f2dec2988f4a4984494b55154b09bd8
SHA1

89f05debffdf11fa7c0761698067e59afa08375b
SHA256

0bdb5e571aefdfb8c27968b20aee1dbf0ec2ea1124f49efeec79a325f010923b
SHA512

e0407480fb45d76442baec48ecc74a49ef6a19e718e35dc605538e5eb05a46c4e96ed4a0bac076be77e8fbe727e1ddb01f9eb7d7bdfff17358eed136f2dd1b02
SSDEEP

24576:+uRdnQWxsSK0qz9ArzAEK0vz5W4MHwW2+836L:+uDxBqz9av/t7fWf

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://securebiz.org/fhsgtsspen6/get.php

Attributes

extension
.tisc
offline_id
uFHwN7bjwCkJEeUg8JHISzLqrwudidH8XsPzHDt1
payload_url
http://znpst.top/dl/build2.exe

http://securebiz.org/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-1JwFK5rT39 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: 0336gSd743d

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/1656-2-0x0000000000630000-0x000000000074B000-memory.dmp	family_djvu
behavioral1/memory/2820-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2820-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2820-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2820-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-59-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-61-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-63-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-64-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-65-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2836	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-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\6b7877a8-ddd2-4f80-bf5a-1e1f45401193\\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe\" --AutoStart"	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe

Looks up external IP address via web service 3 IoCs

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

flow	ioc
3	api.2ip.ua
4	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1656 set thread context of 2820	1656	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	29
PID 2336 set thread context of 2640	2336	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	32

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2820	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe
2820	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe
2640	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe
2640	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 2820	1656	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	29
PID 1656 wrote to memory of 2820	1656	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	29
PID 1656 wrote to memory of 2820	1656	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	29
PID 1656 wrote to memory of 2820	1656	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	29
PID 1656 wrote to memory of 2820	1656	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	29
PID 1656 wrote to memory of 2820	1656	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	29
PID 1656 wrote to memory of 2820	1656	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	29
PID 1656 wrote to memory of 2820	1656	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	29
PID 1656 wrote to memory of 2820	1656	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	29
PID 1656 wrote to memory of 2820	1656	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	29
PID 1656 wrote to memory of 2820	1656	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	29
PID 2820 wrote to memory of 2836	2820	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	30
PID 2820 wrote to memory of 2836	2820	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	30
PID 2820 wrote to memory of 2836	2820	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	30
PID 2820 wrote to memory of 2836	2820	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	30
PID 2820 wrote to memory of 2336	2820	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	31
PID 2820 wrote to memory of 2336	2820	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	31
PID 2820 wrote to memory of 2336	2820	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	31
PID 2820 wrote to memory of 2336	2820	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	31
PID 2336 wrote to memory of 2640	2336	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	32
PID 2336 wrote to memory of 2640	2336	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	32
PID 2336 wrote to memory of 2640	2336	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	32
PID 2336 wrote to memory of 2640	2336	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	32
PID 2336 wrote to memory of 2640	2336	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	32
PID 2336 wrote to memory of 2640	2336	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	32
PID 2336 wrote to memory of 2640	2336	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	32
PID 2336 wrote to memory of 2640	2336	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	32
PID 2336 wrote to memory of 2640	2336	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	32
PID 2336 wrote to memory of 2640	2336	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	32
PID 2336 wrote to memory of 2640	2336	2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Users\Admin\AppData\Local\Temp\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2820
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\6b7877a8-ddd2-4f80-bf5a-1e1f45401193" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2836
- - C:\Users\Admin\AppData\Local\Temp\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2336
  - - C:\Users\Admin\AppData\Local\Temp\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2640

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

System Information Discovery

T1082

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
7fb5fa1534dcf77f2125b2403b30a0ee

SHA1
365d96812a69ac0a4611ea4b70a3f306576cc3ea

SHA256
33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

SHA512
a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

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

Filesize
436B

MD5
1bfe0a81db078ea084ff82fe545176fe

SHA1
50b116f578bd272922fa8eae94f7b02fd3b88384

SHA256
5ba8817f13eee00e75158bad93076ab474a068c6b52686579e0f728fda68499f

SHA512
37c582f3f09f8d80529608c09041295d1644bcc9de6fb8c4669b05339b0dd870f9525abc5eed53ad06a94b51441275504bc943c336c5beb63b53460ba836ca8d

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

Filesize
174B

MD5
af2e3f56cccf0c461d6c9cfc8cab5651

SHA1
13747e641d5e46b61acb247f2ced01e2a9af7805

SHA256
a9cbe13ce115cf7381e6869b7152fa8c11f4c4da15c3cbbb329aba440ddd0ab7

SHA512
a6a82ae26a73bf9ae330feead115f215234f7a482af19a4b58fec56aab31d2ddc44d217127a1304ec1d126d337c936f29102d611df2556b6589dead13bacba0d

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
d4960964330252b767f0b9ba84b1925a

SHA1
4aba52e2a0c8fa8ee021237156c4048d0009d9da

SHA256
97be543603b5a9272d726609b3395e16dabaa56bf6737cd7484111135325c95e

SHA512
45b4a6e0ff5ec51d5d045ed87777531537cba5cb3646bfbbc22da9af8b74a5791079651734abdbe66f22e8e83f79644a4525ceeec6eaff6e99c21cf67c00d401

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

Filesize
170B

MD5
c592be380a8e171ad5994ff2fa442abd

SHA1
cc562326f8b100d5a566e05a427931156a703a5e

SHA256
97892b3e5873ee28cd00c751ea85da7c45f1569ce2bf33ef6d1fa15c07ed0d91

SHA512
a06c7dcd9df876d6b32387d87ee41c0479f413a1eb991d27b990d601c9f03111cc6e7bc8a4d082ed41a1d7fbdd499b19b97488d9db173a934c4fbf28c112fe9f

Download Submit
C:\Users\Admin\AppData\Local\6b7877a8-ddd2-4f80-bf5a-1e1f45401193\2f2dec2988f4a4984494b55154b09bd8_JaffaCakes118.exe

Filesize
809KB

MD5
2f2dec2988f4a4984494b55154b09bd8

SHA1
89f05debffdf11fa7c0761698067e59afa08375b

SHA256
0bdb5e571aefdfb8c27968b20aee1dbf0ec2ea1124f49efeec79a325f010923b

SHA512
e0407480fb45d76442baec48ecc74a49ef6a19e718e35dc605538e5eb05a46c4e96ed4a0bac076be77e8fbe727e1ddb01f9eb7d7bdfff17358eed136f2dd1b02

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab558F.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/1656-6-0x0000000000550000-0x00000000005E1000-memory.dmp

Filesize
580KB

Download
memory/1656-0-0x0000000000550000-0x00000000005E1000-memory.dmp

Filesize
580KB

Download
memory/1656-1-0x0000000000550000-0x00000000005E1000-memory.dmp

Filesize
580KB

Download
memory/1656-2-0x0000000000630000-0x000000000074B000-memory.dmp

Filesize
1.1MB

Download
memory/2336-39-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2336-31-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download
memory/2336-33-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2640-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2640-59-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2640-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2640-65-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2640-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2640-64-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2640-63-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2640-61-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2640-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2640-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2820-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2820-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2820-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2820-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2820-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download