djvu | 688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384

Analysis

max time kernel
148s
max time network
136s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
21-12-2024 18:49

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General

Target

JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe
Size

806KB
MD5

1524f7fd7674d698764d764b96b899f2
SHA1

49c0b2fe746a67bf796cbac5a6f856ddc00d6816
SHA256

688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384
SHA512

4dcf019ed1a0b80e9ecac5a29579678948948a9af796d549b2dedb793e7bb54f1781d30b10794640bbdc214981c5f1927c5187f35113b3513ed1575f5ddfcc9a
SSDEEP

12288:DDv6PuPB2Ua9mUfwfzRHwjlamvMfioAs2DqDfQikj9poWXqjp/jUuTWHhRIwW:/QhafzhRtf7FioAO/QMWH7

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.nuhb
offline_id
PfLhykvDxmCghCq8peuxBtQ3c0QBuANi8WUkuet1
payload_url
http://zerit.top/dl/build2.exe

http://fuyt.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-c565B1ILoZ 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: 0453Jbdio

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2320-2-0x0000000001E20000-0x0000000001F3B000-memory.dmp	family_djvu
behavioral1/memory/2772-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2772-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2772-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2772-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2936-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2936-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2936-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2936-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2936-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2936-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2936-65-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2936-63-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2936-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2936-67-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2764	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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\1ecdd5fa-7b3b-436d-ba84-d6eced464b7c\\JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe\" --AutoStart"	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.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 2320 set thread context of 2772	2320	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	32
PID 2752 set thread context of 2936	2752	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	36

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	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2772	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe
2772	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe
2936	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe
2936	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2320 wrote to memory of 2772	2320	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	32
PID 2320 wrote to memory of 2772	2320	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	32
PID 2320 wrote to memory of 2772	2320	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	32
PID 2320 wrote to memory of 2772	2320	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	32
PID 2320 wrote to memory of 2772	2320	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	32
PID 2320 wrote to memory of 2772	2320	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	32
PID 2320 wrote to memory of 2772	2320	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	32
PID 2320 wrote to memory of 2772	2320	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	32
PID 2320 wrote to memory of 2772	2320	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	32
PID 2320 wrote to memory of 2772	2320	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	32
PID 2320 wrote to memory of 2772	2320	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	32
PID 2772 wrote to memory of 2764	2772	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	34
PID 2772 wrote to memory of 2764	2772	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	34
PID 2772 wrote to memory of 2764	2772	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	34
PID 2772 wrote to memory of 2764	2772	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	34
PID 2772 wrote to memory of 2752	2772	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	35
PID 2772 wrote to memory of 2752	2772	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	35
PID 2772 wrote to memory of 2752	2772	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	35
PID 2772 wrote to memory of 2752	2772	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	35
PID 2752 wrote to memory of 2936	2752	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	36
PID 2752 wrote to memory of 2936	2752	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	36
PID 2752 wrote to memory of 2936	2752	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	36
PID 2752 wrote to memory of 2936	2752	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	36
PID 2752 wrote to memory of 2936	2752	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	36
PID 2752 wrote to memory of 2936	2752	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	36
PID 2752 wrote to memory of 2936	2752	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	36
PID 2752 wrote to memory of 2936	2752	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	36
PID 2752 wrote to memory of 2936	2752	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	36
PID 2752 wrote to memory of 2936	2752	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	36
PID 2752 wrote to memory of 2936	2752	JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe	36

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2320
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2772
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\1ecdd5fa-7b3b-436d-ba84-d6eced464b7c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2764
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2752
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2936

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
67e486b2f148a3fca863728242b6273e

SHA1
452a84c183d7ea5b7c015b597e94af8eef66d44a

SHA256
facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

SHA512
d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

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
14395e6c699fb4c5a558652223121002

SHA1
a03daa511a1438a40663944f763eb367343a78bd

SHA256
9cba80e015f7fd9209f6be576bb898035d5abc17b69a0873222bf24b60ab75fc

SHA512
a39f0fadac92d276174b61251e2a8d5070c332bfd20b109ccb8f6d195397ee370bc1b14b6a2b1c12a0d50b5d505dfd305cd4ec08ebcf01bb64d696e757988d58

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

Filesize
170B

MD5
c94019f50748a812e81550c53d5ee454

SHA1
c3483b18e58bc0ea947405ebc2e2961f444342f5

SHA256
0baed0b07d8db21e2051f8397516a1bd9e4e246e9bdd418914261385a20af7af

SHA512
3f7cad89b8c50ede76935f142c95cd408bcdeb70b0c0e30b27122295111d0809def4ba224389608ad7f1e32f8de505832bf5c374c8fcbbb6a577e64184121e3a

Download Submit
C:\Users\Admin\AppData\Local\1ecdd5fa-7b3b-436d-ba84-d6eced464b7c\JaffaCakes118_688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384.exe

Filesize
806KB

MD5
1524f7fd7674d698764d764b96b899f2

SHA1
49c0b2fe746a67bf796cbac5a6f856ddc00d6816

SHA256
688a084c8c609c21b2d88481ec7650150e47d6905ed2bad624819834c193a384

SHA512
4dcf019ed1a0b80e9ecac5a29579678948948a9af796d549b2dedb793e7bb54f1781d30b10794640bbdc214981c5f1927c5187f35113b3513ed1575f5ddfcc9a

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabF383.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/2320-1-0x0000000000350000-0x00000000003E1000-memory.dmp

Filesize
580KB

Download
memory/2320-2-0x0000000001E20000-0x0000000001F3B000-memory.dmp

Filesize
1.1MB

Download
memory/2320-7-0x0000000000350000-0x00000000003E1000-memory.dmp

Filesize
580KB

Download
memory/2320-0-0x0000000000350000-0x00000000003E1000-memory.dmp

Filesize
580KB

Download
memory/2752-34-0x0000000000400000-0x00000000004D4000-memory.dmp

Filesize
848KB

Download
memory/2752-28-0x0000000000400000-0x00000000004D4000-memory.dmp

Filesize
848KB

Download
memory/2752-27-0x0000000000230000-0x00000000002C1000-memory.dmp

Filesize
580KB

Download
memory/2772-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2772-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2772-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2772-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2772-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2936-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-65-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-63-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-67-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download