djvu | 9fc2fc1e5d5030f32a56aab3a6280a2d84736610587b43d06da457eb18758ca5

General

Target

f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
Size

702KB
MD5

f6d403ce6749d1b09bb033e89679f9d0
SHA1

cde64e7900244ac644754a0ad7adc2acf381db81
SHA256

9fc2fc1e5d5030f32a56aab3a6280a2d84736610587b43d06da457eb18758ca5
SHA512

6825e8689867a30655554355fd59e704a8a30b399498907ced0903948e7c47ad942c489fbb5110caefc7827a3f9dfa01e2f378d086774a3891e2f00aa1f50983
SSDEEP

12288:RzRSTkfnSSpug3M6KeHkZN2g9T9m5Z5tgUNIqfYDPkS9rKp9XUaMjbcmHa868:fSw/oO4Qg9wthYDPkGaMjrHa86

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.npph
offline_id
I6hXMDXkHGafsmFBIn2oJ0Y07Q3ZWPy43JWTINt1
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-67ue5AWKVu 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: 0251riuyfgh

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 10 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2480-2-0x0000000002A40000-0x0000000002B5A000-memory.dmp	family_djvu
behavioral1/memory/2480-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2480-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2480-22-0x0000000002A40000-0x0000000002B5A000-memory.dmp	family_djvu
behavioral1/memory/2480-21-0x0000000000400000-0x000000000282D000-memory.dmp	family_djvu
behavioral1/memory/2704-39-0x0000000000400000-0x000000000282D000-memory.dmp	family_djvu
behavioral1/memory/2704-40-0x0000000000400000-0x000000000282D000-memory.dmp	family_djvu
behavioral1/memory/2704-43-0x0000000000400000-0x000000000282D000-memory.dmp	family_djvu
behavioral1/memory/1616-66-0x0000000000400000-0x000000000282D000-memory.dmp	family_djvu
behavioral1/memory/2704-410-0x0000000000400000-0x000000000282D000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Renames multiple (168) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware
Executes dropped EXE 1 IoCs

Processes:

f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe

pid process

1616 f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

1992 icacls.exe

pid	process
1616	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe

pid	process
1992	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\2fd9ee52-2390-40bc-9019-3e3c5c5ebd80\\f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe\" --AutoStart"	f6d403ce6749d1b09bb033e89679f9d0_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.

Processes:

flow ioc

9 api.2ip.ua
25 api.2ip.ua
4 api.2ip.ua
5 api.2ip.ua
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

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

Processes:

f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exeicacls.exef6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exef6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exef6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exef6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe

pid	process
2480	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
2480	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
2704	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
2704	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
1616	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
1616	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
2704	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exetaskeng.exe

description	pid	process	target process
PID 2480 wrote to memory of 1992	2480	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe	icacls.exe
PID 2480 wrote to memory of 1992	2480	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe	icacls.exe
PID 2480 wrote to memory of 1992	2480	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe	icacls.exe
PID 2480 wrote to memory of 1992	2480	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe	icacls.exe
PID 2480 wrote to memory of 2704	2480	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
PID 2480 wrote to memory of 2704	2480	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
PID 2480 wrote to memory of 2704	2480	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
PID 2480 wrote to memory of 2704	2480	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
PID 1136 wrote to memory of 1616	1136	taskeng.exe	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
PID 1136 wrote to memory of 1616	1136	taskeng.exe	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
PID 1136 wrote to memory of 1616	1136	taskeng.exe	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
PID 1136 wrote to memory of 1616	1136	taskeng.exe	f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2480
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\2fd9ee52-2390-40bc-9019-3e3c5c5ebd80" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:1992
- C:\Users\Admin\AppData\Local\Temp\f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2704

C:\Windows\system32\taskeng.exe
taskeng.exe {13204648-39C2-4273-BFFA-B57E3AE8113C} S-1-5-21-3551809350-4263495960-1443967649-1000:NNYJZAHP\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1136
- C:\Users\Admin\AppData\Local\2fd9ee52-2390-40bc-9019-3e3c5c5ebd80\f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\2fd9ee52-2390-40bc-9019-3e3c5c5ebd80\f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe --Task
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1616

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
a841a051d77fa4bcbcf205bdd11215ee

SHA1
3740641407beecdbc638809bf9790c97f9bc02b1

SHA256
afb727e1ae363e5b47c62c75cf9a7c81e2ef2dd89b2897a3749ac22314e8bef4

SHA512
ead5993877f2ec4e4f3a8535f37d2a5a5954eb28ac80553a5ba0a744b01d486061c136303059d71b33558d60b54918a959b669d58788b381ed5359b74f1cd704

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

Filesize
170B

MD5
93bb13fee95f784cbd5c065543e1fec7

SHA1
96fafd2e79be2d72c8c4634aebc3dc1ed3f7e0fb

SHA256
001184760e95126e141bf765465b6d186b9a20042699f8382d69e020485e4f3e

SHA512
938fcf3ed54a4f28cd06bc43b34f2d22efebe4ced2a661a0a2d5fae438277589a3c69e82c0429b2495830e5e380755bf0bf7dc134e8a0529a7b5f62e6fe0742b

Download Submit
C:\Users\Admin\AppData\Local\2fd9ee52-2390-40bc-9019-3e3c5c5ebd80\f6d403ce6749d1b09bb033e89679f9d0_JaffaCakes118.exe

Filesize
702KB

MD5
f6d403ce6749d1b09bb033e89679f9d0

SHA1
cde64e7900244ac644754a0ad7adc2acf381db81

SHA256
9fc2fc1e5d5030f32a56aab3a6280a2d84736610587b43d06da457eb18758ca5

SHA512
6825e8689867a30655554355fd59e704a8a30b399498907ced0903948e7c47ad942c489fbb5110caefc7827a3f9dfa01e2f378d086774a3891e2f00aa1f50983

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

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar697E.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/1616-66-0x0000000000400000-0x000000000282D000-memory.dmp

Filesize
36.2MB

Download
memory/1616-54-0x0000000002830000-0x00000000028C1000-memory.dmp

Filesize
580KB

Download
memory/2480-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-23-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download
memory/2480-21-0x0000000000400000-0x000000000282D000-memory.dmp

Filesize
36.2MB

Download
memory/2480-22-0x0000000002A40000-0x0000000002B5A000-memory.dmp

Filesize
1.1MB

Download
memory/2480-0-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download
memory/2480-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2480-1-0x0000000000220000-0x00000000002B1000-memory.dmp

Filesize
580KB

Download
memory/2480-2-0x0000000002A40000-0x0000000002B5A000-memory.dmp

Filesize
1.1MB

Download
memory/2704-25-0x00000000028A0000-0x0000000002931000-memory.dmp

Filesize
580KB

Download
memory/2704-39-0x0000000000400000-0x000000000282D000-memory.dmp

Filesize
36.2MB

Download
memory/2704-40-0x0000000000400000-0x000000000282D000-memory.dmp

Filesize
36.2MB

Download
memory/2704-43-0x0000000000400000-0x000000000282D000-memory.dmp

Filesize
36.2MB

Download
memory/2704-410-0x0000000000400000-0x000000000282D000-memory.dmp

Filesize
36.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads