djvu | ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0

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

C2

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 18 IoCs

resource	yara_rule
behavioral2/memory/2872-2-0x00000000023B0000-0x00000000024CB000-memory.dmp	family_djvu
behavioral2/memory/4516-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4516-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4516-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4516-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4516-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
djvu

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3508	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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a0bf6bb9-f3b6-4f94-9677-d1c6814fad99\\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
16	api.2ip.ua
17	api.2ip.ua
22	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2872 set thread context of 4516	2872	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	82
PID 3616 set thread context of 1604	3616	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	90

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_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe
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

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4516	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe
4516	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe
1604	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe
1604	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 4516	2872	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	82
PID 2872 wrote to memory of 4516	2872	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	82
PID 2872 wrote to memory of 4516	2872	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	82
PID 2872 wrote to memory of 4516	2872	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	82
PID 2872 wrote to memory of 4516	2872	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	82
PID 2872 wrote to memory of 4516	2872	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	82
PID 2872 wrote to memory of 4516	2872	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	82
PID 2872 wrote to memory of 4516	2872	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	82
PID 2872 wrote to memory of 4516	2872	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	82
PID 2872 wrote to memory of 4516	2872	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	82
PID 4516 wrote to memory of 3508	4516	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	85
PID 4516 wrote to memory of 3508	4516	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	85
PID 4516 wrote to memory of 3508	4516	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	85
PID 4516 wrote to memory of 3616	4516	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	86
PID 4516 wrote to memory of 3616	4516	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	86
PID 4516 wrote to memory of 3616	4516	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	86
PID 3616 wrote to memory of 1604	3616	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	90
PID 3616 wrote to memory of 1604	3616	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	90
PID 3616 wrote to memory of 1604	3616	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	90
PID 3616 wrote to memory of 1604	3616	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	90
PID 3616 wrote to memory of 1604	3616	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	90
PID 3616 wrote to memory of 1604	3616	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	90
PID 3616 wrote to memory of 1604	3616	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	90
PID 3616 wrote to memory of 1604	3616	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	90
PID 3616 wrote to memory of 1604	3616	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	90
PID 3616 wrote to memory of 1604	3616	JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe	90

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:2872
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4516
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\a0bf6bb9-f3b6-4f94-9677-d1c6814fad99" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:3508
- - 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:3616
  - - 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:1604

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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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
49812af54990bd78236bbbe792ffe6cd

SHA1
c235ac67f2bdfa964ed2b869cc0dcccece9a99ca

SHA256
e66b6f6de7274087bd850fb70636b94e4a030987aec87274495bae6038384090

SHA512
71fbdd504491d87d54127674f559663e3388d0dd85c130b1673243abafa62f2cba482b69dcc44165bd6ea177d344c4d0ce970da598ef0c29170bbee0ea303565

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

Filesize
170B

MD5
c7a425e2f35d41f280e59d6a99ddce60

SHA1
a15ace5402cb8f01fba642cb3b3eee9260c9632b

SHA256
22961e93d995868ac5c94775c5e3a8e6f6d44f2abe965057d1ae00b585907dd4

SHA512
9f5af2f6ec03f10c18ad2308e67e57fe63116a16fa89a433a5836972373ee70dc9adaab0fab5be628373fee167d14bdcff99af6e53a44e029a8f0c7b92a54bc1

Download Submit
C:\Users\Admin\AppData\Local\a0bf6bb9-f3b6-4f94-9677-d1c6814fad99\JaffaCakes118_ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0.exe

Filesize
848KB

MD5
b87f36483c9186c191d2e4e222eacab0

SHA1
f4fc009fbe9e91bad89e4beda5c616265626b7f2

SHA256
ac7de31e5d302db8b21f712d113b0f08051ed85dd456c21f6ce3349f8493c0e0

SHA512
95cdc58afc587f1b6a4e8d35b558a151dba4faaa324e36b6e35dc2ce8c5be8085e086ec968c93e7e13ab552f4ed51ce7b3abfa272901bd0f2419cdb56f963953

Download Submit
memory/1604-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2872-2-0x00000000023B0000-0x00000000024CB000-memory.dmp

Filesize
1.1MB

Download
memory/2872-1-0x0000000002300000-0x000000000239E000-memory.dmp

Filesize
632KB

Download
memory/3616-23-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/3616-19-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/4516-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4516-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4516-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4516-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4516-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads