djvu | 3f23068954a420723036b05e95eb7f3d0cfcae0c4e71ce3f09dc99203c074083

Analysis

max time kernel
144s
max time network
118s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
31/12/2024, 13:52

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe
Size

815KB
MD5

1fee8e2da2d002444a602391a4dc1b7b
SHA1

c141c05103bfd6464ae59a0f5b194b4d8eba8598
SHA256

3f23068954a420723036b05e95eb7f3d0cfcae0c4e71ce3f09dc99203c074083
SHA512

f48d534843b110b69bf0a45cc9b1f7fb6c037fe2eca46f838344e0a00b033f53e0783bf881f338bf15e25ea431097ae1c1a67d0831ef338b9d8743089b2b0fdb
SSDEEP

12288:Whb8E/vK17prPrtM9zDJWP2Rl7+rxFUo26JbkoOF+1zV7iDOeJCyu8+AztGGbJNH:c4my1L592gxFU2kGhcCX9E5Il

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.irjg
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-xl2bbDnZSN 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: 0338gSd743d

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 14 IoCs

resource	yara_rule
behavioral1/memory/1908-2-0x0000000002F90000-0x00000000030AB000-memory.dmp	family_djvu
behavioral1/memory/1608-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1608-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1608-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1608-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2728-56-0x0000000000400000-0x0000000000537000-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
2592	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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\52ea3cd7-5d60-4ee6-87a5-0b4f3d8b4bba\\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe\" --AutoStart"	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.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 1908 set thread context of 1608	1908	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	30
PID 2896 set thread context of 2728	2896	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.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	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1608	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe
1608	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe
2728	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe
2728	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1908 wrote to memory of 1608	1908	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	30
PID 1908 wrote to memory of 1608	1908	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	30
PID 1908 wrote to memory of 1608	1908	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	30
PID 1908 wrote to memory of 1608	1908	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	30
PID 1908 wrote to memory of 1608	1908	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	30
PID 1908 wrote to memory of 1608	1908	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	30
PID 1908 wrote to memory of 1608	1908	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	30
PID 1908 wrote to memory of 1608	1908	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	30
PID 1908 wrote to memory of 1608	1908	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	30
PID 1908 wrote to memory of 1608	1908	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	30
PID 1908 wrote to memory of 1608	1908	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	30
PID 1608 wrote to memory of 2592	1608	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	31
PID 1608 wrote to memory of 2592	1608	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	31
PID 1608 wrote to memory of 2592	1608	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	31
PID 1608 wrote to memory of 2592	1608	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	31
PID 1608 wrote to memory of 2896	1608	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	32
PID 1608 wrote to memory of 2896	1608	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	32
PID 1608 wrote to memory of 2896	1608	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	32
PID 1608 wrote to memory of 2896	1608	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	32
PID 2896 wrote to memory of 2728	2896	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	33
PID 2896 wrote to memory of 2728	2896	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	33
PID 2896 wrote to memory of 2728	2896	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	33
PID 2896 wrote to memory of 2728	2896	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	33
PID 2896 wrote to memory of 2728	2896	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	33
PID 2896 wrote to memory of 2728	2896	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	33
PID 2896 wrote to memory of 2728	2896	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	33
PID 2896 wrote to memory of 2728	2896	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	33
PID 2896 wrote to memory of 2728	2896	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	33
PID 2896 wrote to memory of 2728	2896	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	33
PID 2896 wrote to memory of 2728	2896	JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1908
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1608
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\52ea3cd7-5d60-4ee6-87a5-0b4f3d8b4bba" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2592
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2896
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2728

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

Loading Replay Monitor...

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
4855cb97a3e6853274821ff24a31adde

SHA1
afadceb02d6b2b74d51f283f8157c4888777c1b7

SHA256
b426ee84c033c981146a83f7059ab2ea78ea2a48a253c343d9229c5e8bdd1beb

SHA512
921d1591c8a08c31fe58bff15187bedfa176c25dd73c6f901010a049861d56fb06f3d56f757259f58a1f4abf3212c4ef4b145063288f49675df2ae3f1fc020f4

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

Filesize
342B

MD5
2224e344a2065a67810330e3bd80f979

SHA1
273964fa81414bb23065324dd3847119aca0e020

SHA256
768966e56a17d49ee5dd6f031911d997b7f2831d7c3585e2d8eeb5c6f841ccc8

SHA512
960c156ed8abec198776c3fdd29b18e9a75e717f4676f005ff9c0631413b9128470fc7e44d2c6fb6221c28a37af696edfc22b4612805e20dd4953ffe49d68158

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

Filesize
170B

MD5
9329492632ceba657760502cf5127a17

SHA1
940c3f05e5a8eb8715d8940e7066847a6cf48562

SHA256
1d796108eae84ad4416938f310ab42c1fa14cdc8afe84ad5259505bd8d2e0796

SHA512
f4add1ca80346107499b4d4c51536e5905007a1f44be1766ef1f0fd856b3203d65f157ba513ec18d3ee5b24bbafc6d1e4e4f10b9b24207fea239e4f684825ab7

Download Submit
C:\Users\Admin\AppData\Local\52ea3cd7-5d60-4ee6-87a5-0b4f3d8b4bba\JaffaCakes118_1fee8e2da2d002444a602391a4dc1b7b.exe

Filesize
815KB

MD5
1fee8e2da2d002444a602391a4dc1b7b

SHA1
c141c05103bfd6464ae59a0f5b194b4d8eba8598

SHA256
3f23068954a420723036b05e95eb7f3d0cfcae0c4e71ce3f09dc99203c074083

SHA512
f48d534843b110b69bf0a45cc9b1f7fb6c037fe2eca46f838344e0a00b033f53e0783bf881f338bf15e25ea431097ae1c1a67d0831ef338b9d8743089b2b0fdb

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab1323.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/1608-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1608-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1608-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1608-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1608-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1908-2-0x0000000002F90000-0x00000000030AB000-memory.dmp

Filesize
1.1MB

Download
memory/1908-1-0x00000000017B0000-0x0000000001841000-memory.dmp

Filesize
580KB

Download
memory/1908-0-0x00000000017B0000-0x0000000001841000-memory.dmp

Filesize
580KB

Download
memory/1908-6-0x00000000017B0000-0x0000000001841000-memory.dmp

Filesize
580KB

Download
memory/2728-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2728-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2896-30-0x0000000000270000-0x0000000000301000-memory.dmp

Filesize
580KB

Download