djvu | 3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c

General

Target

JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe
Size

760KB
MD5

d834245925248f4b8f04e15ddba11730
SHA1

7ce6870e8d2279db38dd7972e2bbdfd54d33df3d
SHA256

3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c
SHA512

fa86c51e7008063956cc67f7f5309024baad40fb27c9f99adeee955ff807c8d6187d0a3977fc4d28bbd29a874d56b46006d5ae1a08c719f5d9c11d922afc160d
SSDEEP

12288:UzyDo/o6oH5jpcnUniUk1F0oysY3x4eeeZfgWT0OBBvd7MjvrRremiB:S/uZKwk1SSYukZzT0WF78Rre7

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.tuid
offline_id
LgcOIftV0dQfFBQStVNfb8BhHy8tHRPvXwSiFwt1
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-FglTTmgzZT 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: 0440tOjkfd

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 18 IoCs

resource	yara_rule
behavioral2/memory/2364-2-0x0000000002230000-0x000000000234B000-memory.dmp	family_djvu
behavioral2/memory/4708-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4708-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4708-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4708-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4708-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1028-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1028-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1028-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1028-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1028-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1028-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1028-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1028-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1028-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1028-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1028-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1028-52-0x0000000000400000-0x0000000000537000-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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2640	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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\89c385b8-715c-4508-9a6b-dc279ca5d399\\JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe\" --AutoStart"	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.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
5	api.2ip.ua
8	api.2ip.ua
18	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2364 set thread context of 4708	2364	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	82
PID 4184 set thread context of 1028	4184	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	86

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_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4708	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe
4708	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe
1028	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe
1028	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 4708	2364	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	82
PID 2364 wrote to memory of 4708	2364	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	82
PID 2364 wrote to memory of 4708	2364	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	82
PID 2364 wrote to memory of 4708	2364	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	82
PID 2364 wrote to memory of 4708	2364	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	82
PID 2364 wrote to memory of 4708	2364	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	82
PID 2364 wrote to memory of 4708	2364	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	82
PID 2364 wrote to memory of 4708	2364	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	82
PID 2364 wrote to memory of 4708	2364	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	82
PID 2364 wrote to memory of 4708	2364	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	82
PID 4708 wrote to memory of 2640	4708	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	83
PID 4708 wrote to memory of 2640	4708	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	83
PID 4708 wrote to memory of 2640	4708	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	83
PID 4708 wrote to memory of 4184	4708	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	84
PID 4708 wrote to memory of 4184	4708	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	84
PID 4708 wrote to memory of 4184	4708	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	84
PID 4184 wrote to memory of 1028	4184	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	86
PID 4184 wrote to memory of 1028	4184	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	86
PID 4184 wrote to memory of 1028	4184	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	86
PID 4184 wrote to memory of 1028	4184	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	86
PID 4184 wrote to memory of 1028	4184	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	86
PID 4184 wrote to memory of 1028	4184	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	86
PID 4184 wrote to memory of 1028	4184	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	86
PID 4184 wrote to memory of 1028	4184	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	86
PID 4184 wrote to memory of 1028	4184	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	86
PID 4184 wrote to memory of 1028	4184	JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe	86

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.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:4708
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\89c385b8-715c-4508-9a6b-dc279ca5d399" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2640
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4184
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:1028

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
08e776263ad0438a1eeb63f3024e196c

SHA1
6d1a9e61a11e7a82e7c298916b461c9f92f3a9dd

SHA256
d90f3d8274b49acb14b04ff92f0d04187667e405ba35f37e7e8d13d64d43a410

SHA512
f60e3d93e7ce0dc59380e2d1a131bade8ab532df61c8ea611504545274e5f8e317bb9127225d30889dbcafac39f2d2ac4d468f6d7bc0976854e5b463430d7bbc

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

Filesize
170B

MD5
0f99f9a1df329c6a3abd9b5e8b8c3943

SHA1
7b3e8eab9f24d0e3977e7744c5956072f60a3b37

SHA256
8801f585eca5316e9de17a8806013707ac1da192e60493bcce83da1ab376316f

SHA512
729b767034f475331c3ef18275e2be5b50063c1990437c6dde7ace3d3b1fe13263dfb2f2c7680ae54c61580dd548d758865d8d4a058e2b8aefe157d48cbcd282

Download Submit
C:\Users\Admin\AppData\Local\89c385b8-715c-4508-9a6b-dc279ca5d399\JaffaCakes118_3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c.exe

Filesize
760KB

MD5
d834245925248f4b8f04e15ddba11730

SHA1
7ce6870e8d2279db38dd7972e2bbdfd54d33df3d

SHA256
3e837470875b62682d0a8c451e8d1389a0ae559b9e6de08edcaa69ec38e5216c

SHA512
fa86c51e7008063956cc67f7f5309024baad40fb27c9f99adeee955ff807c8d6187d0a3977fc4d28bbd29a874d56b46006d5ae1a08c719f5d9c11d922afc160d

Download Submit
memory/1028-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1028-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1028-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1028-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1028-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1028-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1028-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1028-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1028-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1028-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1028-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1028-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2364-2-0x0000000002230000-0x000000000234B000-memory.dmp

Filesize
1.1MB

Download
memory/2364-1-0x0000000000960000-0x0000000000A01000-memory.dmp

Filesize
644KB

Download
memory/4184-26-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/4184-21-0x0000000000400000-0x00000000004E6000-memory.dmp

Filesize
920KB

Download
memory/4708-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4708-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4708-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4708-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4708-19-0x0000000000400000-0x0000000000537000-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