djvu | a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92

Analysis

max time kernel
147s
max time network
134s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26-12-2024 21:49

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General

Target

JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe
Size

833KB
MD5

c9c63f746a050322a9bf97882a984517
SHA1

1adea86208f175391145f3d2c1796bae3adb917f
SHA256

a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92
SHA512

125ca034e9adc6997b71120410e459ba6aa7d584435fee00f624572f0af2cea70541a10910931fef2f5a98e7e819dfc522bd0e84e1aedbb42442a9cb8d6f9ef8
SSDEEP

12288:kmVlEiAyfV0tM01+N01239KVvt66GwI4GBQ/fMLPRdpWw5AYKhTd9OunnwQ7RX:v0iAyfV0tMc+y44DGSR/f+pdL6hTdvw

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.gtys
offline_id
qwVQoIsE2xLety0oNWloOilSDuIBXJGK86LM3ot1
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-fnn5kv33Vv 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: 0439JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2008-2-0x0000000001E70000-0x0000000001F8B000-memory.dmp	family_djvu
behavioral1/memory/1784-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1784-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1784-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1784-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-63-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-65-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2672-67-0x0000000000400000-0x0000000000537000-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
2872	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\\cf65c96c-8415-4c4a-915e-9ae4ce010839\\JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe\" --AutoStart"	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.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 2008 set thread context of 1784	2008	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	30
PID 2792 set thread context of 2672	2792	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.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_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1784	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe
1784	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe
2672	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe
2672	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2008 wrote to memory of 1784	2008	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	30
PID 2008 wrote to memory of 1784	2008	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	30
PID 2008 wrote to memory of 1784	2008	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	30
PID 2008 wrote to memory of 1784	2008	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	30
PID 2008 wrote to memory of 1784	2008	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	30
PID 2008 wrote to memory of 1784	2008	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	30
PID 2008 wrote to memory of 1784	2008	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	30
PID 2008 wrote to memory of 1784	2008	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	30
PID 2008 wrote to memory of 1784	2008	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	30
PID 2008 wrote to memory of 1784	2008	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	30
PID 2008 wrote to memory of 1784	2008	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	30
PID 1784 wrote to memory of 2872	1784	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	32
PID 1784 wrote to memory of 2872	1784	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	32
PID 1784 wrote to memory of 2872	1784	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	32
PID 1784 wrote to memory of 2872	1784	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	32
PID 1784 wrote to memory of 2792	1784	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	33
PID 1784 wrote to memory of 2792	1784	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	33
PID 1784 wrote to memory of 2792	1784	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	33
PID 1784 wrote to memory of 2792	1784	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	33
PID 2792 wrote to memory of 2672	2792	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	34
PID 2792 wrote to memory of 2672	2792	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	34
PID 2792 wrote to memory of 2672	2792	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	34
PID 2792 wrote to memory of 2672	2792	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	34
PID 2792 wrote to memory of 2672	2792	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	34
PID 2792 wrote to memory of 2672	2792	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	34
PID 2792 wrote to memory of 2672	2792	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	34
PID 2792 wrote to memory of 2672	2792	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	34
PID 2792 wrote to memory of 2672	2792	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	34
PID 2792 wrote to memory of 2672	2792	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	34
PID 2792 wrote to memory of 2672	2792	JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe	34

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2008
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1784
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\cf65c96c-8415-4c4a-915e-9ae4ce010839" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2872
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2792
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2672

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
582400d9ec23ea06079865f0ba07346f

SHA1
e6ee73a910428050f0769d47b739252868254e98

SHA256
66a9f7acab9d158d44722253e0354127edab0ef943706868b37f979e42578a0f

SHA512
25b81aea64e106504668563644bc982d5cd27a0d17387ecd66a876c6e90080a71a6c5ebfc504796779d67c9625aaf4745d55b67013f941c1b9eab145e64e7d43

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

Filesize
170B

MD5
766a08f7de7d4b558041f4afadd5af32

SHA1
de2fff147a4fa3fa533e3c3342e59b3efb835abd

SHA256
e660d8e2563b796619e506100d578bba81895162811d179fb05b1ab5d00b8359

SHA512
442f5ec9cba677d4fd0708ba6647215e19191ba4473bd1337fb33ecdb6a3f687ffc5348e87fe29c7b5f1dd5ce64433dd170fe134ef0efc9e1f0f9ec95f157b44

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab9C6E.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\cf65c96c-8415-4c4a-915e-9ae4ce010839\JaffaCakes118_a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92.exe

Filesize
833KB

MD5
c9c63f746a050322a9bf97882a984517

SHA1
1adea86208f175391145f3d2c1796bae3adb917f

SHA256
a48a97fb041e82f99f8615ce9d5f12b455d9bc90485ab17ca5e614c013163c92

SHA512
125ca034e9adc6997b71120410e459ba6aa7d584435fee00f624572f0af2cea70541a10910931fef2f5a98e7e819dfc522bd0e84e1aedbb42442a9cb8d6f9ef8

Download Submit
memory/1784-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1784-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1784-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1784-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1784-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2008-6-0x0000000000590000-0x0000000000621000-memory.dmp

Filesize
580KB

Download
memory/2008-2-0x0000000001E70000-0x0000000001F8B000-memory.dmp

Filesize
1.1MB

Download
memory/2008-1-0x0000000000590000-0x0000000000621000-memory.dmp

Filesize
580KB

Download
memory/2008-0-0x0000000000590000-0x0000000000621000-memory.dmp

Filesize
580KB

Download
memory/2672-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2672-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2672-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2672-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2672-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2672-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2672-63-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2672-65-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2672-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2672-67-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2792-33-0x0000000000400000-0x0000000000514000-memory.dmp

Filesize
1.1MB

Download
memory/2792-29-0x0000000000400000-0x0000000000514000-memory.dmp

Filesize
1.1MB

Download
memory/2792-28-0x0000000000590000-0x0000000000621000-memory.dmp

Filesize
580KB

Download