djvu | 28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d

General

Target

JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
Size

767KB
MD5

520a9e0aab30e7ba475eeaa7b8e51e1c
SHA1

cd735396941cec394eec00c8849a18fa6e10ade9
SHA256

28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d
SHA512

6d01df7f6933b071f54dd93b3e83d59cbb6f8325a6a0448ebcef94bddc75d0468eb020dcf4a89eeb6974b2f9a30b5a893ee9711c63e1a2668936833ce21b9d95
SSDEEP

12288:wHh5UiA4FgFp7aFIGUlP3M7b5QYyWBqw+AjZ181tsu6XE2Ux4:w3Umg2GDlwTqw+ui1i5b

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/2416-2-0x00000000022A0000-0x00000000023BB000-memory.dmp	family_djvu
behavioral2/memory/2440-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2440-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2440-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2440-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2440-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2652-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2652-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2652-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2652-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2652-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2652-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2652-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2652-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2652-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2652-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2652-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2652-49-0x0000000000400000-0x0000000000537000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4496	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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\d8864bc8-dd1f-45cc-ace7-df2140591904\\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe\" --AutoStart"	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.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
21	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2416 set thread context of 2440	2416	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	82
PID 4980 set thread context of 2652	4980	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.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_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2440	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
2440	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
2652	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
2652	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2416 wrote to memory of 2440	2416	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	82
PID 2416 wrote to memory of 2440	2416	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	82
PID 2416 wrote to memory of 2440	2416	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	82
PID 2416 wrote to memory of 2440	2416	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	82
PID 2416 wrote to memory of 2440	2416	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	82
PID 2416 wrote to memory of 2440	2416	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	82
PID 2416 wrote to memory of 2440	2416	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	82
PID 2416 wrote to memory of 2440	2416	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	82
PID 2416 wrote to memory of 2440	2416	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	82
PID 2416 wrote to memory of 2440	2416	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	82
PID 2440 wrote to memory of 4496	2440	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	83
PID 2440 wrote to memory of 4496	2440	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	83
PID 2440 wrote to memory of 4496	2440	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	83
PID 2440 wrote to memory of 4980	2440	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	84
PID 2440 wrote to memory of 4980	2440	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	84
PID 2440 wrote to memory of 4980	2440	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	84
PID 4980 wrote to memory of 2652	4980	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	86
PID 4980 wrote to memory of 2652	4980	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	86
PID 4980 wrote to memory of 2652	4980	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	86
PID 4980 wrote to memory of 2652	4980	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	86
PID 4980 wrote to memory of 2652	4980	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	86
PID 4980 wrote to memory of 2652	4980	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	86
PID 4980 wrote to memory of 2652	4980	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	86
PID 4980 wrote to memory of 2652	4980	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	86
PID 4980 wrote to memory of 2652	4980	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	86
PID 4980 wrote to memory of 2652	4980	JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe	86

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2416
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.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:2440
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\d8864bc8-dd1f-45cc-ace7-df2140591904" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:4496
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4980
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2652

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
f1377686b9a3ed0ed35fcba3c356a203

SHA1
9d43bf141e0d54a74e112f8574d032e713431cd2

SHA256
b636e1591a7ea24cfe42e126916b6cc662f50819b87e766e8d2edf7ee06c663e

SHA512
d3ee469081c1e3f0a6f0c6638de0bb57af0225b32c7c940acd6637edcef61774f9ad7d7c5687f9e22f972d65e31e9774c9a33287d30dae76d13872cb0deeb2fe

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

Filesize
170B

MD5
524c9e1199cdc642ce7a310cee7e80e8

SHA1
7c3fbf6e5ec48ea09267e74d3005a503d675314d

SHA256
501057ec72f35ebe7348ba4038e36d261a42a3bab1c620a5b7b1bdd5f6a1dee5

SHA512
39293c375a83a09942a570bb5994dba8f54e6919c912c17915431b6dd62b14e1e9727fc4c732f6646f15b4709518d94af29ff7d7d1878b35a6d3e9c475dc79d8

Download Submit
C:\Users\Admin\AppData\Local\d8864bc8-dd1f-45cc-ace7-df2140591904\JaffaCakes118_28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d.exe

Filesize
767KB

MD5
520a9e0aab30e7ba475eeaa7b8e51e1c

SHA1
cd735396941cec394eec00c8849a18fa6e10ade9

SHA256
28991f0b0323363b19cea3184f8bfede6de600e61ae3763c05a55db2c6ae352d

SHA512
6d01df7f6933b071f54dd93b3e83d59cbb6f8325a6a0448ebcef94bddc75d0468eb020dcf4a89eeb6974b2f9a30b5a893ee9711c63e1a2668936833ce21b9d95

Download Submit
memory/2416-1-0x00000000005D0000-0x0000000000672000-memory.dmp

Filesize
648KB

Download
memory/2416-2-0x00000000022A0000-0x00000000023BB000-memory.dmp

Filesize
1.1MB

Download
memory/2440-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2440-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2440-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2440-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2440-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2652-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4980-21-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download
memory/4980-24-0x0000000000400000-0x00000000004EB000-memory.dmp

Filesize
940KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads