djvu | 77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92

Analysis

max time kernel
147s
max time network
136s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 15:08

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General

Target

JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe
Size

726KB
MD5

30024c796d61480aaf3e0cdad1b4f1c8
SHA1

8be2e1592da6b31faf1bf36d23714ac01f989c0a
SHA256

77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92
SHA512

89f2c54182eb42e18a3ad437193d61b92d331a075194ca31e44a0d55e13c8550917fe73910d656bd13431b0882fd0c8448f694b2e86aa5de1c70a08562760e16
SSDEEP

12288:0l0Uwevw3hwKJyCdli7cLAW6+I+V7XFe4eo6tjQU+o:0llweY3htlAdMVBF6tjH

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.dmay
offline_id
Xe4NOamOTHZrARTiL9dfVzAylFrEWLGGbr2dngt1
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-FT7BNVbXC9 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: 0458JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2508-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/576-7-0x0000000001D10000-0x0000000001E2B000-memory.dmp	family_djvu
behavioral1/memory/2508-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2508-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2508-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2400-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2400-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2400-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2400-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2400-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2400-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2400-65-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2400-63-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2400-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2400-67-0x0000000000400000-0x0000000000537000-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
2836	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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\1aa8552a-fd63-4ce8-a17e-2280c34a40db\\JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe\" --AutoStart"	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.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 576 set thread context of 2508	576	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	31
PID 2776 set thread context of 2400	2776	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.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_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2508	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe
2508	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe
2400	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe
2400	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 576 wrote to memory of 2508	576	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	31
PID 576 wrote to memory of 2508	576	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	31
PID 576 wrote to memory of 2508	576	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	31
PID 576 wrote to memory of 2508	576	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	31
PID 576 wrote to memory of 2508	576	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	31
PID 576 wrote to memory of 2508	576	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	31
PID 576 wrote to memory of 2508	576	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	31
PID 576 wrote to memory of 2508	576	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	31
PID 576 wrote to memory of 2508	576	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	31
PID 576 wrote to memory of 2508	576	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	31
PID 576 wrote to memory of 2508	576	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	31
PID 2508 wrote to memory of 2836	2508	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	33
PID 2508 wrote to memory of 2836	2508	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	33
PID 2508 wrote to memory of 2836	2508	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	33
PID 2508 wrote to memory of 2836	2508	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	33
PID 2508 wrote to memory of 2776	2508	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	34
PID 2508 wrote to memory of 2776	2508	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	34
PID 2508 wrote to memory of 2776	2508	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	34
PID 2508 wrote to memory of 2776	2508	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	34
PID 2776 wrote to memory of 2400	2776	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	35
PID 2776 wrote to memory of 2400	2776	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	35
PID 2776 wrote to memory of 2400	2776	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	35
PID 2776 wrote to memory of 2400	2776	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	35
PID 2776 wrote to memory of 2400	2776	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	35
PID 2776 wrote to memory of 2400	2776	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	35
PID 2776 wrote to memory of 2400	2776	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	35
PID 2776 wrote to memory of 2400	2776	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	35
PID 2776 wrote to memory of 2400	2776	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	35
PID 2776 wrote to memory of 2400	2776	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	35
PID 2776 wrote to memory of 2400	2776	JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe	35

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:576
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2508
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\1aa8552a-fd63-4ce8-a17e-2280c34a40db" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2836
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2776
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2400

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
6d5ccb1ab87c4e98e0a4587ebdbd4507

SHA1
13a8fb17de20e9ccaf9fa8fe01fb34c900a4cdfd

SHA256
f32ebc4f1b13466d73c3db18e91657d8de748931a58ea2dd5ca9e0b4c6e22f00

SHA512
42f916af27868e6b3fe25865a2074f9577f10c3d655e9dab3c8d8c0458a21f5fd824aaf652de69af697e882807a3f67468f005c5664c58ebcde06f16ac0622af

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

Filesize
170B

MD5
e71f6335e1cf369d5ebf1de3aa3b34c1

SHA1
19d88696842e35d6f7da6d42a1e817a05839b498

SHA256
02645f7c5876c52fed051eae0c08075f76affa28182eafc762d053e0004383e7

SHA512
8cec821d9b26aca87eebb63068e67203186c496edcb75808439e7f36fc4be59cb416fff41ab0ee4b044d7a66f2693e9ff7331117eb31022641b0cda0bb0861ad

Download Submit
C:\Users\Admin\AppData\Local\1aa8552a-fd63-4ce8-a17e-2280c34a40db\JaffaCakes118_77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92.exe

Filesize
726KB

MD5
30024c796d61480aaf3e0cdad1b4f1c8

SHA1
8be2e1592da6b31faf1bf36d23714ac01f989c0a

SHA256
77c05297a94767e5dcd88d78c471da740c7c640d94a1fec0fe389b80e1e5aa92

SHA512
89f2c54182eb42e18a3ad437193d61b92d331a075194ca31e44a0d55e13c8550917fe73910d656bd13431b0882fd0c8448f694b2e86aa5de1c70a08562760e16

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabF325.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/576-1-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/576-0-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/576-7-0x0000000001D10000-0x0000000001E2B000-memory.dmp

Filesize
1.1MB

Download
memory/576-5-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2400-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2400-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2400-67-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2400-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2400-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2400-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2400-63-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2400-65-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2400-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2400-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2508-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2508-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2508-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2508-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2508-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2776-29-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/2776-28-0x0000000001CE0000-0x0000000001D72000-memory.dmp

Filesize
584KB

Download
memory/2776-33-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download