djvu | 40b9fd94cc55d53f7e386153ec83f25b312abfb7acdad208105c760e74fc814a

Analysis

max time kernel
145s
max time network
125s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
07-01-2025 01:46

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General

Target

JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe
Size

780KB
MD5

468e14503ccc7db47f87533c9a4147f7
SHA1

5ad83d44064214d0d32b6bba580d76d54b404a9b
SHA256

40b9fd94cc55d53f7e386153ec83f25b312abfb7acdad208105c760e74fc814a
SHA512

4b7f0a135059ed177fa692dedf697d6941b50bacf32613e07a55b9c743a10ddf2a11a6e5fd4ea8b0b475755bb896d6ce1494d5b3eb219c913cc7be79c43200e1
SSDEEP

12288:X+yy1ob1Wk7JJTYQStLp9M14DIHeEEFzxrmaQGi/cdlQLyLrylm+uenZURlOwZGS:/NpW3QStm4DUHEFFmaejy/+uNBsE

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.maql
offline_id
xcdIdDNFh62dy3iJsba1COhcfDENsbjPHQQ2Eht1
payload_url
http://znpst.top/dl/build2.exe

http://rlrz.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-pk3SGFlmek 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: 0340gSd743d

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 14 IoCs

resource	yara_rule
behavioral1/memory/2432-1-0x0000000004960000-0x0000000004A7B000-memory.dmp	family_djvu
behavioral1/memory/2728-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2640-58-0x0000000000400000-0x0000000000537000-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
2748	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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\25206792-e778-4c22-bb28-fe926c10dbca\\JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe\" --AutoStart"	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.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
3	api.2ip.ua
4	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2432 set thread context of 2728	2432	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	30
PID 2620 set thread context of 2640	2620	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	33

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	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2728	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe
2728	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe
2640	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe
2640	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 2728	2432	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	30
PID 2432 wrote to memory of 2728	2432	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	30
PID 2432 wrote to memory of 2728	2432	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	30
PID 2432 wrote to memory of 2728	2432	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	30
PID 2432 wrote to memory of 2728	2432	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	30
PID 2432 wrote to memory of 2728	2432	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	30
PID 2432 wrote to memory of 2728	2432	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	30
PID 2432 wrote to memory of 2728	2432	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	30
PID 2432 wrote to memory of 2728	2432	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	30
PID 2432 wrote to memory of 2728	2432	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	30
PID 2432 wrote to memory of 2728	2432	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	30
PID 2728 wrote to memory of 2748	2728	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	31
PID 2728 wrote to memory of 2748	2728	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	31
PID 2728 wrote to memory of 2748	2728	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	31
PID 2728 wrote to memory of 2748	2728	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	31
PID 2728 wrote to memory of 2620	2728	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	32
PID 2728 wrote to memory of 2620	2728	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	32
PID 2728 wrote to memory of 2620	2728	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	32
PID 2728 wrote to memory of 2620	2728	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	32
PID 2620 wrote to memory of 2640	2620	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	33
PID 2620 wrote to memory of 2640	2620	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	33
PID 2620 wrote to memory of 2640	2620	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	33
PID 2620 wrote to memory of 2640	2620	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	33
PID 2620 wrote to memory of 2640	2620	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	33
PID 2620 wrote to memory of 2640	2620	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	33
PID 2620 wrote to memory of 2640	2620	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	33
PID 2620 wrote to memory of 2640	2620	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	33
PID 2620 wrote to memory of 2640	2620	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	33
PID 2620 wrote to memory of 2640	2620	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	33
PID 2620 wrote to memory of 2640	2620	JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2728
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\25206792-e778-4c22-bb28-fe926c10dbca" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2748
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2620
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2640

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
8f0a30f1701789aad2abcf26b7eee852

SHA1
f9a8908b082801da453d82a732a2a35791ee30b2

SHA256
eb1ef75d51e6488b5fdd77fd37d35b50c9f471b380652711cfe0e0ee95c369ed

SHA512
9ab641a7236b681cbf9fe0cdc19f9061a3f648243082af8637bfeeead5c89860268e548dd9b981149beda6e5a23a7c2e2f67a3a114cd46c64c5d8663ddcd2263

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
66decc1c0621f81362b2e20d8ae85d84

SHA1
ec66fd5eb03fa40f816c39b8d1528f9679256a70

SHA256
832139f1b01f5e1616d4f77a68c0d56397fa082321de49e77e08da0beaade0c8

SHA512
96c2940ce7608b4b0af7c7b4380f1f28e4896d9958583c6238f26f08446dc85d7094058fa33f5c147b4179354cb743f36ea434bd0cec318abefca3090252110b

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

Filesize
170B

MD5
e74ec9af36ae771886f4c3e3b9e68d49

SHA1
e27aff4a2304700278f9fed708e0c2d2e72bf79a

SHA256
64b0148335fb57d7a95947bdced32ef75f580e9635d9c3e5ccb974d954e09543

SHA512
5136cb46084be6ac9b784506120d483911c5f2b8ea661f1726dfa42d2a3388d0f96e5e53cf6a3dbb63bd11f3c5149a0e4adb48cf7aec83e5042bba8155fac713

Download Submit
C:\Users\Admin\AppData\Local\25206792-e778-4c22-bb28-fe926c10dbca\JaffaCakes118_468e14503ccc7db47f87533c9a4147f7.exe

Filesize
780KB

MD5
468e14503ccc7db47f87533c9a4147f7

SHA1
5ad83d44064214d0d32b6bba580d76d54b404a9b

SHA256
40b9fd94cc55d53f7e386153ec83f25b312abfb7acdad208105c760e74fc814a

SHA512
4b7f0a135059ed177fa692dedf697d6941b50bacf32613e07a55b9c743a10ddf2a11a6e5fd4ea8b0b475755bb896d6ce1494d5b3eb219c913cc7be79c43200e1

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab34C6.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/2432-1-0x0000000004960000-0x0000000004A7B000-memory.dmp

Filesize
1.1MB

Download
memory/2432-0-0x00000000047D0000-0x0000000004861000-memory.dmp

Filesize
580KB

Download
memory/2432-5-0x00000000047D0000-0x0000000004861000-memory.dmp

Filesize
580KB

Download
memory/2640-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2640-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2640-58-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2640-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2640-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2640-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2640-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2640-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2640-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2728-7-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download