djvu | f7416e3f009957168dba525532072bcdb53ef2e20e8f6891ac5ad5a16b5f16c2

General

Target

ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe
Size

745KB
MD5

ea5f9e5a6230afdf746ca66d73a562fe
SHA1

e87f7c58123d206c0b2d6bbff53a776672337624
SHA256

f7416e3f009957168dba525532072bcdb53ef2e20e8f6891ac5ad5a16b5f16c2
SHA512

f24dc06251bf035973737fee95bedb976ce0eaa0e671a02e364de5d5ea6584b00685aef1466dd1baebc4a74823ae69dc58f01a42a3b5015a02eab8066d61ccdc
SSDEEP

12288:DHJwPR6R5RDcj4eS39FuYOQ3JqLpH2xGHFijTIvZaw1xionTG2X5L:DHGPoRbCS394BEg9WoIqz1tTtJ

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cjto.top/nddddhsspen6/get.php

Attributes

extension
.ogdo
offline_id
XIyyRCNH8lJ6pGHLNnQPCMfabY9p3AQCEQc3Lnt1
payload_url
http://cjto.top/files/penelop/updatewin1.exe

http://cjto.top/files/penelop/updatewin2.exe

http://cjto.top/files/penelop/updatewin.exe

http://cjto.top/files/penelop/3.exe

http://cjto.top/files/penelop/4.exe

http://cjto.top/files/penelop/5.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-SY0GqQtRAT 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: 0250riuyfgh

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 11 IoCs

resource	yara_rule
behavioral1/memory/2556-2-0x0000000000BF0000-0x0000000000D0A000-memory.dmp	family_djvu
behavioral1/memory/2556-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2556-21-0x0000000000400000-0x0000000000A0A000-memory.dmp	family_djvu
behavioral1/memory/2556-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2556-23-0x0000000000BF0000-0x0000000000D0A000-memory.dmp	family_djvu
behavioral1/memory/2820-27-0x0000000000400000-0x0000000000A0A000-memory.dmp	family_djvu
behavioral1/memory/2820-41-0x0000000000400000-0x0000000000A0A000-memory.dmp	family_djvu
behavioral1/memory/2820-43-0x0000000000400000-0x0000000000A0A000-memory.dmp	family_djvu
behavioral1/memory/2820-46-0x0000000000400000-0x0000000000A0A000-memory.dmp	family_djvu
behavioral1/memory/3008-68-0x0000000000400000-0x0000000000A0A000-memory.dmp	family_djvu
behavioral1/memory/2820-446-0x0000000000400000-0x0000000000A0A000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Renames multiple (185) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Executes dropped EXE 1 IoCs

pid	Process
3008	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2760	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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\78379b9d-329f-4399-84dc-9b1ff904636f\\ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe\" --AutoStart"	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe

Looks up external IP address via web service 4 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
21	api.2ip.ua
4	api.2ip.ua
5	api.2ip.ua
9	api.2ip.ua

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 4 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	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2556	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe
2556	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe
2820	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe
2820	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe
3008	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe
3008	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe
2820	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2556 wrote to memory of 2760	2556	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe	31
PID 2556 wrote to memory of 2760	2556	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe	31
PID 2556 wrote to memory of 2760	2556	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe	31
PID 2556 wrote to memory of 2760	2556	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe	31
PID 2556 wrote to memory of 2820	2556	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe	32
PID 2556 wrote to memory of 2820	2556	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe	32
PID 2556 wrote to memory of 2820	2556	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe	32
PID 2556 wrote to memory of 2820	2556	ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe	32
PID 1064 wrote to memory of 3008	1064	taskeng.exe	38
PID 1064 wrote to memory of 3008	1064	taskeng.exe	38
PID 1064 wrote to memory of 3008	1064	taskeng.exe	38
PID 1064 wrote to memory of 3008	1064	taskeng.exe	38

C:\Users\Admin\AppData\Local\Temp\ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2556
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\78379b9d-329f-4399-84dc-9b1ff904636f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:2760
- C:\Users\Admin\AppData\Local\Temp\ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2820

C:\Windows\system32\taskeng.exe
taskeng.exe {079DDD86-B56E-4220-95D9-387E01CD3B5C} S-1-5-21-3533259084-2542256011-65585152-1000:XPAJOTIY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1064
- C:\Users\Admin\AppData\Local\78379b9d-329f-4399-84dc-9b1ff904636f\ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\78379b9d-329f-4399-84dc-9b1ff904636f\ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe --Task
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3008

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

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
7fb5fa1534dcf77f2125b2403b30a0ee

SHA1
365d96812a69ac0a4611ea4b70a3f306576cc3ea

SHA256
33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

SHA512
a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

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
cb7efcb1afeaf8a0e14c3ba78d181583

SHA1
3c2becce31bf09eeea424cb4981886d1b5246eba

SHA256
199bcaddd9aea597178471148edea8fee19671b7d015867bfad514497d234a9f

SHA512
9f5ce77e6776eee818d33e859fac8454b958e942d3c3764ce39d61ba224166b0529cf7d4353db20db07b2b8175b0ec954a036a37c9857458a8ac1a74ae253c3a

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

Filesize
170B

MD5
20f29d0a391a5ae09582ec6c245a6313

SHA1
3fa2be6dace5f6c6fdfb7483d9a57e7234d443cb

SHA256
b2203246e07667715a073b083178a7ab3c11b44e487243fb94e48c91881d30a7

SHA512
3fbe7b0bf9a8a2bde95c33b3a69cdbf0ea70bcd96d7af7f82c115c00f6d9cc41cd6eaba35a22ebe52be24ce7cf923b4126ab7ce0e7eee499fcf61f30f521be24

Download Submit
C:\Users\Admin\AppData\Local\78379b9d-329f-4399-84dc-9b1ff904636f\ea5f9e5a6230afdf746ca66d73a562fe_JaffaCakes118.exe

Filesize
745KB

MD5
ea5f9e5a6230afdf746ca66d73a562fe

SHA1
e87f7c58123d206c0b2d6bbff53a776672337624

SHA256
f7416e3f009957168dba525532072bcdb53ef2e20e8f6891ac5ad5a16b5f16c2

SHA512
f24dc06251bf035973737fee95bedb976ce0eaa0e671a02e364de5d5ea6584b00685aef1466dd1baebc4a74823ae69dc58f01a42a3b5015a02eab8066d61ccdc

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabBDE3.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar200F.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/2556-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2556-2-0x0000000000BF0000-0x0000000000D0A000-memory.dmp

Filesize
1.1MB

Download
memory/2556-1-0x0000000000310000-0x00000000003A1000-memory.dmp

Filesize
580KB

Download
memory/2556-22-0x0000000000310000-0x00000000003A1000-memory.dmp

Filesize
580KB

Download
memory/2556-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2556-23-0x0000000000BF0000-0x0000000000D0A000-memory.dmp

Filesize
1.1MB

Download
memory/2556-0-0x0000000000310000-0x00000000003A1000-memory.dmp

Filesize
580KB

Download
memory/2556-21-0x0000000000400000-0x0000000000A0A000-memory.dmp

Filesize
6.0MB

Download
memory/2820-27-0x0000000000400000-0x0000000000A0A000-memory.dmp

Filesize
6.0MB

Download
memory/2820-26-0x0000000000400000-0x0000000000A0A000-memory.dmp

Filesize
6.0MB

Download
memory/2820-41-0x0000000000400000-0x0000000000A0A000-memory.dmp

Filesize
6.0MB

Download
memory/2820-43-0x0000000000400000-0x0000000000A0A000-memory.dmp

Filesize
6.0MB

Download
memory/2820-46-0x0000000000400000-0x0000000000A0A000-memory.dmp

Filesize
6.0MB

Download
memory/2820-25-0x0000000000320000-0x00000000003B1000-memory.dmp

Filesize
580KB

Download
memory/2820-446-0x0000000000400000-0x0000000000A0A000-memory.dmp

Filesize
6.0MB

Download
memory/3008-56-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download
memory/3008-68-0x0000000000400000-0x0000000000A0A000-memory.dmp

Filesize
6.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads