djvu | a5f59422afd97955873308617220c56369a9a47b65ae39f12805df2d0999a803

Analysis

max time kernel
147s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-12-2024 02:49

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General

Target

d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
Size

771KB
MD5

d4e3e0320449bc147fbced0ced1858b2
SHA1

483094f2ed0d4117f77fb8eb63defb229ef02881
SHA256

a5f59422afd97955873308617220c56369a9a47b65ae39f12805df2d0999a803
SHA512

8775b0e181cb7e96a66956ae67e9078d4a7e8eed2f2bfe9c20760ca6ce8750761d2c0730f42a09f583b4e94176d37ccaa4042ee3015a04ed861631796cc580a4
SSDEEP

24576:BsbiyzJNq7kEJIWlZkL/4qu5mDYZxRTL9:BsddN6kEeYZq5u5zZ

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://astdg.top/fhsgtsspen6/get.php

Attributes

extension
.reqg
offline_id
ioYmb0jtMMtue7xjmkS3WQWGWLR8FTQhb2giQtt1
payload_url
http://securebiz.org/dl/build2.exe

http://astdg.top/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-jTbSQT8ApY 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: 0324gDrgo

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 18 IoCs

resource	yara_rule
behavioral2/memory/3144-2-0x0000000004B00000-0x0000000004C1B000-memory.dmp	family_djvu
behavioral2/memory/2696-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2696-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2696-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2696-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2696-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3540-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3540-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3540-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3540-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3540-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3540-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3540-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3540-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3540-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3296-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3296-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3540-414-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
djvu
Renames multiple (176) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
1432	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
3296	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1912	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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\2f2c1343-25bd-442d-96e9-427dc757a6ef\\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe\" --AutoStart"	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.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
18	api.2ip.ua
53	api.2ip.ua
5	api.2ip.ua
8	api.2ip.ua

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3144 set thread context of 2696	3144	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	83
PID 2612 set thread context of 3540	2612	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	88
PID 1432 set thread context of 3296	1432	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	106

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 7 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	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2696	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
2696	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
3540	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
3540	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
3296	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
3296	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
3540	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
3540	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 3144 wrote to memory of 2696	3144	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	83
PID 3144 wrote to memory of 2696	3144	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	83
PID 3144 wrote to memory of 2696	3144	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	83
PID 3144 wrote to memory of 2696	3144	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	83
PID 3144 wrote to memory of 2696	3144	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	83
PID 3144 wrote to memory of 2696	3144	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	83
PID 3144 wrote to memory of 2696	3144	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	83
PID 3144 wrote to memory of 2696	3144	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	83
PID 3144 wrote to memory of 2696	3144	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	83
PID 3144 wrote to memory of 2696	3144	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	83
PID 2696 wrote to memory of 1912	2696	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	84
PID 2696 wrote to memory of 1912	2696	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	84
PID 2696 wrote to memory of 1912	2696	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	84
PID 2696 wrote to memory of 2612	2696	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	85
PID 2696 wrote to memory of 2612	2696	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	85
PID 2696 wrote to memory of 2612	2696	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	85
PID 2612 wrote to memory of 3540	2612	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	88
PID 2612 wrote to memory of 3540	2612	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	88
PID 2612 wrote to memory of 3540	2612	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	88
PID 2612 wrote to memory of 3540	2612	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	88
PID 2612 wrote to memory of 3540	2612	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	88
PID 2612 wrote to memory of 3540	2612	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	88
PID 2612 wrote to memory of 3540	2612	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	88
PID 2612 wrote to memory of 3540	2612	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	88
PID 2612 wrote to memory of 3540	2612	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	88
PID 2612 wrote to memory of 3540	2612	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	88
PID 1432 wrote to memory of 3296	1432	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	106
PID 1432 wrote to memory of 3296	1432	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	106
PID 1432 wrote to memory of 3296	1432	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	106
PID 1432 wrote to memory of 3296	1432	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	106
PID 1432 wrote to memory of 3296	1432	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	106
PID 1432 wrote to memory of 3296	1432	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	106
PID 1432 wrote to memory of 3296	1432	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	106
PID 1432 wrote to memory of 3296	1432	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	106
PID 1432 wrote to memory of 3296	1432	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	106
PID 1432 wrote to memory of 3296	1432	d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe	106

C:\Users\Admin\AppData\Local\Temp\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3144
- C:\Users\Admin\AppData\Local\Temp\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2696
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\2f2c1343-25bd-442d-96e9-427dc757a6ef" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:1912
- - C:\Users\Admin\AppData\Local\Temp\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2612
  - - C:\Users\Admin\AppData\Local\Temp\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:3540

C:\Users\Admin\AppData\Local\2f2c1343-25bd-442d-96e9-427dc757a6ef\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
C:\Users\Admin\AppData\Local\2f2c1343-25bd-442d-96e9-427dc757a6ef\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe --Task
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1432
- C:\Users\Admin\AppData\Local\2f2c1343-25bd-442d-96e9-427dc757a6ef\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\2f2c1343-25bd-442d-96e9-427dc757a6ef\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe --Task
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3296

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

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
c100f95c36fc18a43fb3478ee04648c9

SHA1
56b3f22e55a55aef5abb053e09265fcf78b214c7

SHA256
ef029ad08f62f8a3b21b3b7937f22b8b56427741e70be428e21479e4a9a86274

SHA512
0c340dd258664b466d63b5baa0c238bf9f9f59c448c9edc4a2481b84580350045fcd83a19b91cdc3e39d24a4a28d7b611da4b8275e7933401401225361da8188

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

Filesize
170B

MD5
74258fa358b907d25cd2bf05a577615c

SHA1
622b39d8ad5d2da62533961d8953a52cd4c6f64e

SHA256
b16a8002f0aa40b4d204c0b3b6060a4bdc1e30eb81139efb7c02b9671b0cbfe9

SHA512
efeae07bf5ada57d43449c01de72d9436dfb47fb0180a942d422eb07f2771bc880ebd385802b83bffa891524135b3a1ac5d0a81672902875de3c75f3c78c53f8

Download Submit
C:\Users\Admin\AppData\Local\2f2c1343-25bd-442d-96e9-427dc757a6ef\d4e3e0320449bc147fbced0ced1858b2_JaffaCakes118.exe

Filesize
771KB

MD5
d4e3e0320449bc147fbced0ced1858b2

SHA1
483094f2ed0d4117f77fb8eb63defb229ef02881

SHA256
a5f59422afd97955873308617220c56369a9a47b65ae39f12805df2d0999a803

SHA512
8775b0e181cb7e96a66956ae67e9078d4a7e8eed2f2bfe9c20760ca6ce8750761d2c0730f42a09f583b4e94176d37ccaa4042ee3015a04ed861631796cc580a4

Download Submit
memory/2696-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2696-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2696-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2696-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2696-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3144-1-0x0000000004A40000-0x0000000004AD2000-memory.dmp

Filesize
584KB

Download
memory/3144-2-0x0000000004B00000-0x0000000004C1B000-memory.dmp

Filesize
1.1MB

Download
memory/3296-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3296-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3540-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3540-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3540-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3540-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3540-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3540-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3540-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3540-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3540-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3540-414-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download