djvu | 7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d

Analysis

max time kernel
147s
max time network
135s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30-12-2024 05:17

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General

Target

JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe
Size

761KB
MD5

28969eb1b4a927fade90b20813c29cde
SHA1

a23c6f3fe8a2b00b07c93ea743fc1b757e45e57d
SHA256

7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d
SHA512

f626e453e047770404b387ea90e56e04da07d67cd3be117a644d9a64c1605115ba6251a2bd9e5e829302f3182ecb1d949a6978fe365f8f3ef7a690defc5b8a5f
SSDEEP

12288:NCd+GJSmVFO8Fw1V0ySglQLWmFg/NzRiKSWkOmUUQkEPYQHYQtu+CEHPh2ss:Ni+IVgywP0XyQLWmFg/N1gOnI4YQ4Qts

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/2192-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2444-7-0x0000000001D00000-0x0000000001E1B000-memory.dmp	family_djvu
behavioral1/memory/2192-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2192-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2192-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2976-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2976-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2976-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2976-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2976-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2976-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2976-65-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2976-63-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2976-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2976-67-0x0000000000400000-0x0000000000537000-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
2904	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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b76e8e5d-6e15-4bae-ad5d-4b56bc20ee66\\JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe\" --AutoStart"	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.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 2444 set thread context of 2192	2444	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	30
PID 2744 set thread context of 2976	2744	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.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	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2192	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe
2192	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe
2976	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe
2976	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2444 wrote to memory of 2192	2444	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	30
PID 2444 wrote to memory of 2192	2444	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	30
PID 2444 wrote to memory of 2192	2444	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	30
PID 2444 wrote to memory of 2192	2444	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	30
PID 2444 wrote to memory of 2192	2444	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	30
PID 2444 wrote to memory of 2192	2444	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	30
PID 2444 wrote to memory of 2192	2444	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	30
PID 2444 wrote to memory of 2192	2444	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	30
PID 2444 wrote to memory of 2192	2444	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	30
PID 2444 wrote to memory of 2192	2444	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	30
PID 2444 wrote to memory of 2192	2444	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	30
PID 2192 wrote to memory of 2904	2192	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	32
PID 2192 wrote to memory of 2904	2192	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	32
PID 2192 wrote to memory of 2904	2192	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	32
PID 2192 wrote to memory of 2904	2192	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	32
PID 2192 wrote to memory of 2744	2192	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	33
PID 2192 wrote to memory of 2744	2192	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	33
PID 2192 wrote to memory of 2744	2192	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	33
PID 2192 wrote to memory of 2744	2192	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	33
PID 2744 wrote to memory of 2976	2744	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	35
PID 2744 wrote to memory of 2976	2744	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	35
PID 2744 wrote to memory of 2976	2744	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	35
PID 2744 wrote to memory of 2976	2744	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	35
PID 2744 wrote to memory of 2976	2744	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	35
PID 2744 wrote to memory of 2976	2744	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	35
PID 2744 wrote to memory of 2976	2744	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	35
PID 2744 wrote to memory of 2976	2744	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	35
PID 2744 wrote to memory of 2976	2744	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	35
PID 2744 wrote to memory of 2976	2744	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	35
PID 2744 wrote to memory of 2976	2744	JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe	35

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2444
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2192
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\b76e8e5d-6e15-4bae-ad5d-4b56bc20ee66" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2904
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2744
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2976

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
fd2ffa98318b8ecdd9daaa81d9133867

SHA1
7a13e702a8988a93a44e19ea4ec62b04fd271a4c

SHA256
6acc7c783a7bf8ea036acbc818b8c5e1357e8f8c7bc6349cc0c70145b978b9f1

SHA512
924cb7ac8d0ca080dfda6d3f87b7f21a3c6e45e1f5350ce8e75bbdb6286ece947e7444d0185b33488b8b8dc34568ceb221a9ab4187a73391edb865761de4756d

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

Filesize
170B

MD5
fc27519e6ba98c9067e95734c982c320

SHA1
39991bccd5138a8233361f5be6343bafa5ae1fec

SHA256
2822a35f1e6dbdbb877e488c0e72ac22e14da2f8291df544d33b53ab085ad88f

SHA512
159e4d31e0f993a089a98822a47cb44be507a0c7e0e3317199891a262f1a81b5a1732b7706ec7fb27db87373d34e4a68298115004cb77136a69f733611b3dd9f

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabD559.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\b76e8e5d-6e15-4bae-ad5d-4b56bc20ee66\JaffaCakes118_7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d.exe

Filesize
761KB

MD5
28969eb1b4a927fade90b20813c29cde

SHA1
a23c6f3fe8a2b00b07c93ea743fc1b757e45e57d

SHA256
7d5c1ecf8bae4e798da87f5a15a85ffc769becbe07d7f2d92c46cb6cb94b938d

SHA512
f626e453e047770404b387ea90e56e04da07d67cd3be117a644d9a64c1605115ba6251a2bd9e5e829302f3182ecb1d949a6978fe365f8f3ef7a690defc5b8a5f

Download Submit
memory/2192-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2192-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2192-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2192-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2192-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2444-7-0x0000000001D00000-0x0000000001E1B000-memory.dmp

Filesize
1.1MB

Download
memory/2444-49-0x0000000001D00000-0x0000000001E1B000-memory.dmp

Filesize
1.1MB

Download
memory/2444-0-0x00000000004D0000-0x0000000000561000-memory.dmp

Filesize
580KB

Download
memory/2444-6-0x00000000004D0000-0x0000000000561000-memory.dmp

Filesize
580KB

Download
memory/2444-1-0x00000000004D0000-0x0000000000561000-memory.dmp

Filesize
580KB

Download
memory/2744-32-0x0000000000400000-0x00000000004C9000-memory.dmp

Filesize
804KB

Download
memory/2744-28-0x0000000000400000-0x00000000004C9000-memory.dmp

Filesize
804KB

Download
memory/2744-27-0x0000000000340000-0x00000000003D1000-memory.dmp

Filesize
580KB

Download
memory/2976-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2976-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2976-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2976-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2976-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2976-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2976-65-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

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memory/2976-63-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

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memory/2976-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

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memory/2976-67-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

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