djvu | d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a

Analysis

max time kernel
145s
max time network
120s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
19/08/2024, 02:08

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General

Target

d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
Size

777KB
MD5

006edf0ac466164ddc9e0ac56474fe0a
SHA1

ee9f512713af63759f11279090d2c8004762735b
SHA256

d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a
SHA512

43305369fea2dad52d51bc9d5947a2f7e78d33baadd07093c250b9eb1fd3762c511033bbfae2b8d6eb52254306d137e29cd15e0b30b0f6d44a9d4f3d12b8b808
SSDEEP

24576:aG18MH/r+RAIFqLN7/uW/Nau09jMxrc5N:3aMD+RANBKIJ09j

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.watz
offline_id
Lc3VTezPWbMhuVAQFzJUdeA68PwI7UDpc5aKHYt1
payload_url
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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/abe121434ad837dd5bdd03878a14485820240531135509/34284d Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0874PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral1/memory/2628-2-0x0000000001EF0000-0x000000000200B000-memory.dmp	family_djvu
behavioral1/memory/1220-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1220-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1220-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1220-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2780-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2780-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2780-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2780-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2780-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2780-60-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2780-71-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2780-72-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2780-75-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2780-74-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2780-76-0x0000000000400000-0x0000000000537000-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
2684	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-1-5-21-940600906-3464502421-4240639183-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\144505c0-851d-48b1-b97f-02253d695baa\\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe\" --AutoStart"	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.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
4	api.2ip.ua
5	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2628 set thread context of 1220	2628	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	31
PID 2712 set thread context of 2780	2712	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	35

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 5 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	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
2780	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
2780	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2628 wrote to memory of 1220	2628	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	31
PID 2628 wrote to memory of 1220	2628	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	31
PID 2628 wrote to memory of 1220	2628	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	31
PID 2628 wrote to memory of 1220	2628	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	31
PID 2628 wrote to memory of 1220	2628	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	31
PID 2628 wrote to memory of 1220	2628	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	31
PID 2628 wrote to memory of 1220	2628	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	31
PID 2628 wrote to memory of 1220	2628	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	31
PID 2628 wrote to memory of 1220	2628	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	31
PID 2628 wrote to memory of 1220	2628	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	31
PID 2628 wrote to memory of 1220	2628	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	31
PID 1220 wrote to memory of 2684	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	33
PID 1220 wrote to memory of 2684	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	33
PID 1220 wrote to memory of 2684	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	33
PID 1220 wrote to memory of 2684	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	33
PID 1220 wrote to memory of 2712	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	34
PID 1220 wrote to memory of 2712	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	34
PID 1220 wrote to memory of 2712	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	34
PID 1220 wrote to memory of 2712	1220	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	34
PID 2712 wrote to memory of 2780	2712	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	35
PID 2712 wrote to memory of 2780	2712	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	35
PID 2712 wrote to memory of 2780	2712	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	35
PID 2712 wrote to memory of 2780	2712	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	35
PID 2712 wrote to memory of 2780	2712	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	35
PID 2712 wrote to memory of 2780	2712	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	35
PID 2712 wrote to memory of 2780	2712	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	35
PID 2712 wrote to memory of 2780	2712	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	35
PID 2712 wrote to memory of 2780	2712	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	35
PID 2712 wrote to memory of 2780	2712	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	35
PID 2712 wrote to memory of 2780	2712	d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe	35

C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
"C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2628
- C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
  "C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1220
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\144505c0-851d-48b1-b97f-02253d695baa" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2684
- - C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
    "C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2712
  - - C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe
      "C:\Users\Admin\AppData\Local\Temp\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2780

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

System Location Discovery

T1614

System Language Discovery

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
7fb5fa1534dcf77f2125b2403b30a0ee

SHA1
365d96812a69ac0a4611ea4b70a3f306576cc3ea

SHA256
33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

SHA512
a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

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
a3d34c853693f2b6010ee159e92d7c71

SHA1
bcb46af6e3e008e13fbdbfce843c14a11d1768bc

SHA256
c6f0da32aa49df39887074602ad4a5d476baa1f62efc18dff37b7ecd218bd3d8

SHA512
8419270b62d5dd4367ded2689c1941860b7578605f2e5f3d81bb407f53687c77ca31da78055b12d976ba01e4d45810a2dbe00aee2e0b442eac7eea576c4e6e2f

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

Filesize
170B

MD5
ea9a40768d224bc8b08b1145986b1801

SHA1
6d16d8220024ba14089f6f8c2bad9fac12cf75a8

SHA256
378931af76cb034af0b6a842efbd1c401a08d9da00e4d6fbc73e6893ce140366

SHA512
af5cb3556f43aea2953413d4ec2b27462d8d26491e33ccb36ec084816f9ef4c201137c3839dd92260b9559c50cbf372ac3259a1103fe2339606a6d340137d737

Download Submit
C:\Users\Admin\AppData\Local\144505c0-851d-48b1-b97f-02253d695baa\d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a.exe

Filesize
777KB

MD5
006edf0ac466164ddc9e0ac56474fe0a

SHA1
ee9f512713af63759f11279090d2c8004762735b

SHA256
d343ea857cdf97aa0ccfd14970425c6888bd216d36ad7f6255a044bed36a4b2a

SHA512
43305369fea2dad52d51bc9d5947a2f7e78d33baadd07093c250b9eb1fd3762c511033bbfae2b8d6eb52254306d137e29cd15e0b30b0f6d44a9d4f3d12b8b808

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\CWSOWPAF\welcome[1].htm

Filesize
1024B

MD5
e283c8dd40c532e423b02b27878fd3cc

SHA1
0b7b763f6e8c4573ce957fa90dc9fdf256be981f

SHA256
ebf51d13fd94a2bf09398feb83b19a40a31bc787dca1f202bd106c1db4994bcd

SHA512
b578a0ef2c541cdeb88a84888268ffd34a9246ceff3a8aada7fe1b3e766409e5b0f7828a4362ecbe13d45f448ad75df66220e9da6b40f223954b0a76bf0bd951

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabEB78.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\bowsakkdestx.txt

Filesize
1KB

MD5
c1a0ce43fe2d5ceb87cfe95fe043a9ff

SHA1
91b1b1c5c79013a9ac85c72f5444f728f0eb7f7d

SHA256
2f0d6645968a16822fb2a93ccfaa15a9e5be8e7dd5a1e422c7694acf777454d5

SHA512
2ae5741a76ef1dbab85e050dac56c3448c23d39a5c0c7c4c41af3a1dd8f9a0d8f757978bcee0fee5f0d4a652026d9465a3d46b36d2e702bcca08988d24a1aebe

Download Submit
memory/1220-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1220-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1220-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1220-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1220-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2628-2-0x0000000001EF0000-0x000000000200B000-memory.dmp

Filesize
1.1MB

Download
memory/2628-0-0x0000000000300000-0x0000000000391000-memory.dmp

Filesize
580KB

Download
memory/2628-1-0x0000000000300000-0x0000000000391000-memory.dmp

Filesize
580KB

Download
memory/2712-28-0x00000000004E0000-0x0000000000571000-memory.dmp

Filesize
580KB

Download
memory/2712-34-0x0000000000400000-0x00000000004D3000-memory.dmp

Filesize
844KB

Download
memory/2712-29-0x0000000000400000-0x00000000004D3000-memory.dmp

Filesize
844KB

Download
memory/2780-60-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2780-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2780-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2780-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2780-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2780-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2780-71-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2780-72-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2780-75-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2780-74-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2780-76-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download