djvu | 43bde3d98d64146df981b68d0cbbdc5aa012e24988230f8d32eee3dc0f7ad249

Analysis

max time kernel
142s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13-12-2024 11:54

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General

Target

eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
Size

772KB
MD5

eb609796a7c36bae9dfed03f1369edd3
SHA1

4182d725695c5ced68f1a2644cbb34c48e2bb5e6
SHA256

43bde3d98d64146df981b68d0cbbdc5aa012e24988230f8d32eee3dc0f7ad249
SHA512

5b0b91b1ff65ddafeaed24e7ec84773d7900ad9e2e93266eb147881c1e4667cc5c13d02fb99a608a0a890b17f66ec96d72e17eef6509f0ea1c4cb30f0c83e1fd
SSDEEP

12288:Ks92pX7gHhrgad0iHS3BNvpWHDcvQUeR7vvg3v04eMP4yN9C5M:Ks92pX7gHhrB0iHSTuYoUCjVe9H

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://astdg.top/fhsgtsspen6/get.php

Attributes

extension
.nooa
offline_id
PLtnD1U6oAmgxgJ2nJik1mY9SwUQg07CiN0zSet1
payload_url
http://securebiz.org/dl/build2.exe

http://astdg.top/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-CnI3tI6Ktv 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: 0322gDrgo

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 14 IoCs

resource	yara_rule
behavioral1/memory/2316-2-0x0000000004650000-0x000000000476B000-memory.dmp	family_djvu
behavioral1/memory/2688-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2688-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2688-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2688-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2608-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2608-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2608-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2608-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2608-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2608-58-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2608-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2608-59-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2608-60-0x0000000000400000-0x0000000000537000-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
1992	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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c2a389bc-7875-4148-afd5-b2ebf8eae68f\\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe\" --AutoStart"	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.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
9	api.2ip.ua
3	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2316 set thread context of 2688	2316	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	30
PID 2864 set thread context of 2608	2864	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.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	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2688	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
2688	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
2608	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
2608	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 2688	2316	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	30
PID 2316 wrote to memory of 2688	2316	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	30
PID 2316 wrote to memory of 2688	2316	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	30
PID 2316 wrote to memory of 2688	2316	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	30
PID 2316 wrote to memory of 2688	2316	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	30
PID 2316 wrote to memory of 2688	2316	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	30
PID 2316 wrote to memory of 2688	2316	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	30
PID 2316 wrote to memory of 2688	2316	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	30
PID 2316 wrote to memory of 2688	2316	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	30
PID 2316 wrote to memory of 2688	2316	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	30
PID 2316 wrote to memory of 2688	2316	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	30
PID 2688 wrote to memory of 1992	2688	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	31
PID 2688 wrote to memory of 1992	2688	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	31
PID 2688 wrote to memory of 1992	2688	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	31
PID 2688 wrote to memory of 1992	2688	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	31
PID 2688 wrote to memory of 2864	2688	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	32
PID 2688 wrote to memory of 2864	2688	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	32
PID 2688 wrote to memory of 2864	2688	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	32
PID 2688 wrote to memory of 2864	2688	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	32
PID 2864 wrote to memory of 2608	2864	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	33
PID 2864 wrote to memory of 2608	2864	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	33
PID 2864 wrote to memory of 2608	2864	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	33
PID 2864 wrote to memory of 2608	2864	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	33
PID 2864 wrote to memory of 2608	2864	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	33
PID 2864 wrote to memory of 2608	2864	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	33
PID 2864 wrote to memory of 2608	2864	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	33
PID 2864 wrote to memory of 2608	2864	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	33
PID 2864 wrote to memory of 2608	2864	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	33
PID 2864 wrote to memory of 2608	2864	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	33
PID 2864 wrote to memory of 2608	2864	eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2316
- C:\Users\Admin\AppData\Local\Temp\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2688
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\c2a389bc-7875-4148-afd5-b2ebf8eae68f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:1992
- - C:\Users\Admin\AppData\Local\Temp\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2864
  - - C:\Users\Admin\AppData\Local\Temp\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2608

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
aca6784d31776032efda78b23de21bd5

SHA1
dd4c9d85039bc52481b82c22a3ff8c7fc7a7fd5a

SHA256
277e43038cfd4b6c2fc95ea208eb6f3dd1391e929e9ff43b40f75d203828eeb4

SHA512
03322d99b44a3d7592e452da46fc74de7dea6cb313768bacce887f4eb7acc57e5d214050aa3742d1f2f2084e6b4f1e94b19114fc746c8b8964ae2a4e53425ce1

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

Filesize
342B

MD5
f04ba33b767bb30ddbf137292ab4e9bc

SHA1
b008b2f8afc19b27054b4c8262c76fd24b5f28ba

SHA256
b9a5e5500eeb8445c9dfdd187ce1b56e31f66eb05cb03151cc26e705db76fe64

SHA512
4dac6a28ba5ffa6843ff45227226dd19b48d5f61b71d320063d1c2e25a88663aec877b7cd0e3fb519950c8dda6b82197619b05a5ffb1b17abab043598adb002d

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

Filesize
170B

MD5
0f03e32f64344caa9d260fe2be6b11b9

SHA1
cac11b3c7714026e623222b086a33dcae026dff4

SHA256
9d5326c439373e03f7f0cabcd1d7330abbc31249d28c9f10dbf9474ca46d6e22

SHA512
887a74c0a32cda1da4c2fefcb0f8201ad63b294ac882eb358e7d560332b39847bfdd7e84a40c0e42d9bc827add4e4e50f9ca84455c123a935072c94a9f139638

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab7E83.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\c2a389bc-7875-4148-afd5-b2ebf8eae68f\eb609796a7c36bae9dfed03f1369edd3_JaffaCakes118.exe

Filesize
772KB

MD5
eb609796a7c36bae9dfed03f1369edd3

SHA1
4182d725695c5ced68f1a2644cbb34c48e2bb5e6

SHA256
43bde3d98d64146df981b68d0cbbdc5aa012e24988230f8d32eee3dc0f7ad249

SHA512
5b0b91b1ff65ddafeaed24e7ec84773d7900ad9e2e93266eb147881c1e4667cc5c13d02fb99a608a0a890b17f66ec96d72e17eef6509f0ea1c4cb30f0c83e1fd

Download Submit
memory/2316-1-0x0000000000300000-0x0000000000391000-memory.dmp

Filesize
580KB

Download
memory/2316-2-0x0000000004650000-0x000000000476B000-memory.dmp

Filesize
1.1MB

Download
memory/2316-0-0x0000000000300000-0x0000000000391000-memory.dmp

Filesize
580KB

Download
memory/2316-7-0x0000000000300000-0x0000000000391000-memory.dmp

Filesize
580KB

Download
memory/2608-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2608-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2608-60-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2608-59-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2608-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2608-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2608-58-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2608-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2608-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2688-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2688-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2688-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2688-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2688-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2864-32-0x00000000002B0000-0x0000000000341000-memory.dmp

Filesize
580KB

Download