djvu | e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a

Analysis

max time kernel
150s
max time network
133s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 02:55

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General

Target

JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe
Size

834KB
MD5

2e451490fb677f99838dbadd4b800863
SHA1

4e8f45ce4237d2151c022d090806501b256c216b
SHA256

e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a
SHA512

00615f17d63fc247e1a067b6719fa7f5f68cc71ae0a09d3fa8b85370f931a83bea7787577e6d369df427987c250e7952ecb4e5199ef408eb2749eafef2fcd68e
SSDEEP

12288:YFdF90LaqSSUruy+x84q3fDkk4evV3OwtVJ0l79WJjrY1lM5uUN3unnwQ7:otuyQfk4evIqL0foc1lM5zNgw

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/2492-2-0x0000000001E80000-0x0000000001F9B000-memory.dmp	family_djvu
behavioral1/memory/2848-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2848-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2848-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2848-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2828-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2828-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2828-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2828-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2828-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2828-61-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2828-66-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2828-67-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2828-64-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2828-68-0x0000000000400000-0x0000000000537000-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
2692	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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\ef2e02ff-ef2a-4b5a-80f2-b96ee0ebe965\\JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe\" --AutoStart"	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.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 2492 set thread context of 2848	2492	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	30
PID 2640 set thread context of 2828	2640	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.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_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2848	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe
2848	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe
2828	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe
2828	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2492 wrote to memory of 2848	2492	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	30
PID 2492 wrote to memory of 2848	2492	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	30
PID 2492 wrote to memory of 2848	2492	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	30
PID 2492 wrote to memory of 2848	2492	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	30
PID 2492 wrote to memory of 2848	2492	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	30
PID 2492 wrote to memory of 2848	2492	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	30
PID 2492 wrote to memory of 2848	2492	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	30
PID 2492 wrote to memory of 2848	2492	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	30
PID 2492 wrote to memory of 2848	2492	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	30
PID 2492 wrote to memory of 2848	2492	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	30
PID 2492 wrote to memory of 2848	2492	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	30
PID 2848 wrote to memory of 2692	2848	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	31
PID 2848 wrote to memory of 2692	2848	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	31
PID 2848 wrote to memory of 2692	2848	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	31
PID 2848 wrote to memory of 2692	2848	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	31
PID 2848 wrote to memory of 2640	2848	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	32
PID 2848 wrote to memory of 2640	2848	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	32
PID 2848 wrote to memory of 2640	2848	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	32
PID 2848 wrote to memory of 2640	2848	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	32
PID 2640 wrote to memory of 2828	2640	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	33
PID 2640 wrote to memory of 2828	2640	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	33
PID 2640 wrote to memory of 2828	2640	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	33
PID 2640 wrote to memory of 2828	2640	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	33
PID 2640 wrote to memory of 2828	2640	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	33
PID 2640 wrote to memory of 2828	2640	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	33
PID 2640 wrote to memory of 2828	2640	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	33
PID 2640 wrote to memory of 2828	2640	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	33
PID 2640 wrote to memory of 2828	2640	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	33
PID 2640 wrote to memory of 2828	2640	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	33
PID 2640 wrote to memory of 2828	2640	JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2492
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2848
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\ef2e02ff-ef2a-4b5a-80f2-b96ee0ebe965" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2692
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2640
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2828

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
3cda38c7a0d70636a4426501df92d10d

SHA1
a9341d86578d8b56e6b7126d23f3172a4b4d8c95

SHA256
ea717e03de695584f26ae24424566c547c4b7b1a8e7f8bbb085c170198cb8a42

SHA512
5a3183365cb272b49d0c4807b97a75873e7a1ddf9e4f3e9fbfd888271f3228c484f712e6a3c7f52525652bec376c884e8af58264f1020784fa74d3d1cb2ce989

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

Filesize
342B

MD5
8830fe2b25ccf0bb5918a4e011b1aae3

SHA1
1f954e2e579ac32279848efb5076100445f57328

SHA256
e45a1ec103d1f655dc5008aa517f6eb99f12f3aa5d381d8c274e946d70d854d6

SHA512
8b96ceb3dec5cbdf0881224c6bd26815166129ca62e7c9b39c76dd61d1f72af371477c8efd66823eea3d2bd6319449f396bcfd5cb64eb32b5ac340603ddd4189

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

Filesize
170B

MD5
1f1a3e383b82e335df2997196aad4c44

SHA1
8a5aac5d2b6ea1949eebcda57da1040a745f5c88

SHA256
fe780e0bd4224a40da189a770f45feeb4da50ba7d115cfa70acbc97e40234f83

SHA512
975c920aadb7b9c09718aef3812d6d9ff88cfaa9b50cb69428c7c764fe5425e690dfab207867a77120c2f481033da657ff3c219844ad672c5a2923688ee6626d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab5C15.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\ef2e02ff-ef2a-4b5a-80f2-b96ee0ebe965\JaffaCakes118_e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a.exe

Filesize
834KB

MD5
2e451490fb677f99838dbadd4b800863

SHA1
4e8f45ce4237d2151c022d090806501b256c216b

SHA256
e90243b7ed104c75b6b410f51671701b8026263970b2f4527595751d9f9cdb7a

SHA512
00615f17d63fc247e1a067b6719fa7f5f68cc71ae0a09d3fa8b85370f931a83bea7787577e6d369df427987c250e7952ecb4e5199ef408eb2749eafef2fcd68e

Download Submit
memory/2492-7-0x0000000000230000-0x00000000002C1000-memory.dmp

Filesize
580KB

Download
memory/2492-0-0x0000000000230000-0x00000000002C1000-memory.dmp

Filesize
580KB

Download
memory/2492-2-0x0000000001E80000-0x0000000001F9B000-memory.dmp

Filesize
1.1MB

Download
memory/2492-1-0x0000000000230000-0x00000000002C1000-memory.dmp

Filesize
580KB

Download
memory/2640-30-0x0000000000520000-0x00000000005B1000-memory.dmp

Filesize
580KB

Download
memory/2640-31-0x0000000000400000-0x0000000000515000-memory.dmp

Filesize
1.1MB

Download
memory/2640-35-0x0000000000400000-0x0000000000515000-memory.dmp

Filesize
1.1MB

Download
memory/2828-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-61-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-68-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-64-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-67-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-66-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2828-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2848-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2848-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2848-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2848-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

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memory/2848-29-0x0000000000400000-0x0000000000537000-memory.dmp

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1.2MB

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