djvu | cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f

Analysis

max time kernel
145s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30-12-2024 06:15

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General

Target

JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
Size

851KB
MD5

7cd4f8cac9361f89f842f325d930788b
SHA1

4e28750ad22ade1f19c8306d0f060b89f34847cc
SHA256

cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f
SHA512

c00e0eb2042ea93cf6270548025338c0f42ec244100a50b7bb33ccc643370e136cd3c078a3cf16285752bcb4b7d820c88aba4fd7fe5663a947b3265233767aa9
SSDEEP

24576:StAgUMn8lZymIsJ3pagaDpVZL3EiQZQp5YxdciFNJJ:YwrF57KDL3Nk2ux9Fb

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://ugll.org/test1/get.php

Attributes

extension
.dfwe
offline_id
eBNgvyGQV1Hmt9DBdxVRs8qPi1agsS7OaohPmit1
payload_url
http://zerit.top/dl/build2.exe

http://ugll.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-j3AdKrnQie 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: 0480JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/632-2-0x0000000001E40000-0x0000000001F5B000-memory.dmp	family_djvu
behavioral1/memory/1148-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1148-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1148-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1148-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2856-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2856-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2856-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2856-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2856-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2856-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2856-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2856-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2856-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2856-57-0x0000000000400000-0x0000000000537000-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
2892	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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\446683f8-a461-49ca-9073-f0a310244e16\\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe\" --AutoStart"	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.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 632 set thread context of 1148	632	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	30
PID 2720 set thread context of 2856	2720	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	34

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_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1148	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
1148	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
2856	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
2856	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 632 wrote to memory of 1148	632	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	30
PID 632 wrote to memory of 1148	632	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	30
PID 632 wrote to memory of 1148	632	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	30
PID 632 wrote to memory of 1148	632	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	30
PID 632 wrote to memory of 1148	632	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	30
PID 632 wrote to memory of 1148	632	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	30
PID 632 wrote to memory of 1148	632	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	30
PID 632 wrote to memory of 1148	632	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	30
PID 632 wrote to memory of 1148	632	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	30
PID 632 wrote to memory of 1148	632	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	30
PID 632 wrote to memory of 1148	632	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	30
PID 1148 wrote to memory of 2892	1148	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	32
PID 1148 wrote to memory of 2892	1148	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	32
PID 1148 wrote to memory of 2892	1148	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	32
PID 1148 wrote to memory of 2892	1148	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	32
PID 1148 wrote to memory of 2720	1148	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	33
PID 1148 wrote to memory of 2720	1148	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	33
PID 1148 wrote to memory of 2720	1148	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	33
PID 1148 wrote to memory of 2720	1148	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	33
PID 2720 wrote to memory of 2856	2720	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	34
PID 2720 wrote to memory of 2856	2720	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	34
PID 2720 wrote to memory of 2856	2720	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	34
PID 2720 wrote to memory of 2856	2720	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	34
PID 2720 wrote to memory of 2856	2720	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	34
PID 2720 wrote to memory of 2856	2720	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	34
PID 2720 wrote to memory of 2856	2720	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	34
PID 2720 wrote to memory of 2856	2720	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	34
PID 2720 wrote to memory of 2856	2720	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	34
PID 2720 wrote to memory of 2856	2720	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	34
PID 2720 wrote to memory of 2856	2720	JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe	34

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:632
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1148
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\446683f8-a461-49ca-9073-f0a310244e16" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2892
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2720
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2856

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
f5f9b1223647679a5a812bcf0a77b6b4

SHA1
80de77474ecf3db5a40a975d3aeb038292b2cf4c

SHA256
263a44e4677e86efa8ed2443667947ede5ba0896ffcd06c583dc28a0896ff393

SHA512
8c16775026a50f043d6093551e2acd110b05823d00f43f9063c17469947cd5a32b0379c0cd672f42c5e9013a6619b2454870019f87b55feff61a3065ff3e7142

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

Filesize
170B

MD5
fa8830fe65cfe3ed6c3543590565eab3

SHA1
634142a6be29fce3ec70a9efa3f2f79b63769cc2

SHA256
585650a384e82bb483895d6db702594dcf24ca2eb6a86a7006a934e1cf0d5cae

SHA512
e311a1525c6314ca6c8bcf8a4d9d40169c675ba6e48967dc83942b9cf4013e88d1f0f30ea2062af474ebd235c5f263a6872dd13ad59ede23446ec40923be907d

Download Submit
C:\Users\Admin\AppData\Local\446683f8-a461-49ca-9073-f0a310244e16\JaffaCakes118_cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f.exe

Filesize
851KB

MD5
7cd4f8cac9361f89f842f325d930788b

SHA1
4e28750ad22ade1f19c8306d0f060b89f34847cc

SHA256
cb6d76b46da2417b07bd7e2d9dd2877a49468bf98105120f1a25af2ff9ebca7f

SHA512
c00e0eb2042ea93cf6270548025338c0f42ec244100a50b7bb33ccc643370e136cd3c078a3cf16285752bcb4b7d820c88aba4fd7fe5663a947b3265233767aa9

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabAED5.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/632-7-0x0000000000680000-0x0000000000712000-memory.dmp

Filesize
584KB

Download
memory/632-0-0x0000000000680000-0x0000000000712000-memory.dmp

Filesize
584KB

Download
memory/632-2-0x0000000001E40000-0x0000000001F5B000-memory.dmp

Filesize
1.1MB

Download
memory/632-1-0x0000000000680000-0x0000000000712000-memory.dmp

Filesize
584KB

Download
memory/1148-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1148-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1148-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1148-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1148-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2720-27-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2720-28-0x0000000000400000-0x0000000000516000-memory.dmp

Filesize
1.1MB

Download
memory/2720-33-0x0000000000400000-0x0000000000516000-memory.dmp

Filesize
1.1MB

Download
memory/2856-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2856-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2856-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2856-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2856-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2856-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2856-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2856-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2856-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2856-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download