djvu | ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0

Analysis

max time kernel
144s
max time network
136s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-12-2024 01:56

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General

Target

JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe
Size

848KB
MD5

b87f36483c9186c191d2e4e222eacab0
SHA1

f4fc009fbe9e91bad89e4beda5c616265626b7f2
SHA256

ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0
SHA512

95cdc58afc587f1b6a4e8d35b558a151dba4faaa324e36b6e35dc2ce8c5be8085e086ec968c93e7e13ab552f4ed51ce7b3abfa272901bd0f2419cdb56f963953
SSDEEP

12288:M8eskKSpU1agkOwpW4M8UWAYDhBuvm+4HTOer65VRAIr87VwCoOyJuBAunnwRs:3WSzwpW4gtm+y2vbYhwpJuBwR

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://fuyt.org/test1/get.php

Attributes

extension
.udla
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: 0435JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2788-2-0x0000000001E60000-0x0000000001F7B000-memory.dmp	family_djvu
behavioral1/memory/1812-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1812-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1812-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1812-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-69-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-68-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-70-0x0000000000400000-0x0000000000537000-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
2892	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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\eed1fc5a-c8b6-43f8-adc0-5ca4c59339be\\JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe\" --AutoStart"	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.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 2788 set thread context of 1812	2788	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	30
PID 2060 set thread context of 2616	2060	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.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_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1812	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe
1812	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe
2616	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe
2616	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 1812	2788	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	30
PID 2788 wrote to memory of 1812	2788	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	30
PID 2788 wrote to memory of 1812	2788	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	30
PID 2788 wrote to memory of 1812	2788	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	30
PID 2788 wrote to memory of 1812	2788	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	30
PID 2788 wrote to memory of 1812	2788	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	30
PID 2788 wrote to memory of 1812	2788	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	30
PID 2788 wrote to memory of 1812	2788	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	30
PID 2788 wrote to memory of 1812	2788	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	30
PID 2788 wrote to memory of 1812	2788	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	30
PID 2788 wrote to memory of 1812	2788	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	30
PID 1812 wrote to memory of 2892	1812	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	31
PID 1812 wrote to memory of 2892	1812	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	31
PID 1812 wrote to memory of 2892	1812	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	31
PID 1812 wrote to memory of 2892	1812	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	31
PID 1812 wrote to memory of 2060	1812	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	32
PID 1812 wrote to memory of 2060	1812	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	32
PID 1812 wrote to memory of 2060	1812	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	32
PID 1812 wrote to memory of 2060	1812	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	32
PID 2060 wrote to memory of 2616	2060	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	33
PID 2060 wrote to memory of 2616	2060	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	33
PID 2060 wrote to memory of 2616	2060	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	33
PID 2060 wrote to memory of 2616	2060	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	33
PID 2060 wrote to memory of 2616	2060	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	33
PID 2060 wrote to memory of 2616	2060	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	33
PID 2060 wrote to memory of 2616	2060	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	33
PID 2060 wrote to memory of 2616	2060	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	33
PID 2060 wrote to memory of 2616	2060	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	33
PID 2060 wrote to memory of 2616	2060	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	33
PID 2060 wrote to memory of 2616	2060	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2788
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1812
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\eed1fc5a-c8b6-43f8-adc0-5ca4c59339be" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2892
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2060
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2616

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
41516afe248ab1fa59f3ecbe0b033462

SHA1
e9025084b0104e4122c5a5270a1755e278ab5545

SHA256
7e6a2cee1828d7ebb2eced1ec3303f3a8a36ecf626e82b2fb2b2213826ef475b

SHA512
7a09ed869a95074875039aea4f1a279f6ec02a02930321a940e6aa5508293761643dcfcf013cb5abcd3a070bdd2ad52d755da79c09b91a83627d5e9a945110ae

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

Filesize
342B

MD5
b0114d0257d90a85084fef02db1a8308

SHA1
c20d58322e377881e237042a4f352b170fb1ff67

SHA256
f75e878d0903d11fe2500ab6027427ec751f47bf3491832210f2a5cc0352bfef

SHA512
c9c9119d181916cd2bce6ac3a508c657294e8f4a98841f5e6e3a0911a208465973136c30842b23371214911c56eae2cc273a73aa482019bd0e69c54dc90f12c6

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

Filesize
170B

MD5
c841a34252f7e5791891ddc6d2e49f1d

SHA1
39d785d50582f7063dd68259ed97ec0f3f2d0dc0

SHA256
36975665ab11d5f74b7e0d348e4d6c48940d3637450e820c670079c984f1bcc5

SHA512
41d7805074bb8757844ccf96cbfe0dfb676a3e828f3b6b87c37ad6ec34f64c21aa21c63313de28b3959fc428c3b24a411c26090b7b93081bb0aedc5e5a2b0b61

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabA14E.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\eed1fc5a-c8b6-43f8-adc0-5ca4c59339be\JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe

Filesize
848KB

MD5
b87f36483c9186c191d2e4e222eacab0

SHA1
f4fc009fbe9e91bad89e4beda5c616265626b7f2

SHA256
ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0

SHA512
95cdc58afc587f1b6a4e8d35b558a151dba4faaa324e36b6e35dc2ce8c5be8085e086ec968c93e7e13ab552f4ed51ce7b3abfa272901bd0f2419cdb56f963953

Download Submit
memory/1812-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1812-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1812-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1812-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1812-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2060-30-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2060-31-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2060-35-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2616-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-70-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-68-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-69-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2788-0-0x00000000007E0000-0x0000000000872000-memory.dmp

Filesize
584KB

Download
memory/2788-1-0x00000000007E0000-0x0000000000872000-memory.dmp

Filesize
584KB

Download
memory/2788-2-0x0000000001E60000-0x0000000001F7B000-memory.dmp

Filesize
1.1MB

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memory/2788-7-0x00000000007E0000-0x0000000000872000-memory.dmp

Filesize
584KB

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