djvu | 7bc2928ce06e7db7bfe0bf3f2c2d2ff9df7f0a8041ea8c593dd0b912c1c3d3fd

General

Target

starticon3.exe
Size

725KB
MD5

e8bbb6d921b79101aea7d906a1798f3d
SHA1

4fd59822cdedd1b194d27d2c01a9cde6222de1bb
SHA256

7bc2928ce06e7db7bfe0bf3f2c2d2ff9df7f0a8041ea8c593dd0b912c1c3d3fd
SHA512

c525e07c65c7be43aa90568f98253b397919cd0f597b1ba446fed51a578ca1aae4c93fa59e1345b20e3216a676ba35c89c67d6ced6bea68da44a53989fa4d656
SSDEEP

12288:O7q+wuEST6sxwGCwuwn5vE2nyrJppqrNSP9kdrzA9PpXtuRt2BoivOnJztu3vdyB:CqrFvGjF5iZqrQag1t7+nJztuHi

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://ring1.ug/As73yhsyU34578hxxx/SDf565g/get.php

Attributes

extension
.coot
offline_id
MRQ5kb5Z12tWuP3e25YoRt4PRDrJd2yuI3coott1
payload_url
http://ring1.ug/files/cost/updatewin1.exe

http://ring1.ug/files/cost/updatewin2.exe

http://ring1.ug/files/cost/updatewin.exe

http://ring1.ug/files/cost/3.exe

http://ring1.ug/files/cost/4.exe

http://ring1.ug/files/cost/5.exe
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like photos, 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-IbdGyCKhdr 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: 0175Asd374y5iuhld

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral2/memory/2796-2-0x0000000006C20000-0x0000000006D3A000-memory.dmp	family_djvu
behavioral2/memory/2796-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2796-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2796-15-0x0000000006C20000-0x0000000006D3A000-memory.dmp	family_djvu
behavioral2/memory/2796-14-0x0000000000400000-0x0000000004F0E000-memory.dmp	family_djvu
behavioral2/memory/4236-18-0x0000000000400000-0x0000000004F0E000-memory.dmp	family_djvu
behavioral2/memory/4236-25-0x0000000000400000-0x0000000004F0E000-memory.dmp	family_djvu
behavioral2/memory/4236-28-0x0000000000400000-0x0000000004F0E000-memory.dmp	family_djvu
behavioral2/memory/4236-29-0x0000000000400000-0x0000000004F0E000-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-1-5-21-1479699283-3000499823-2337359760-1000\Control Panel\International\Geo\Nation	starticon3.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4408	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-1-5-21-1479699283-3000499823-2337359760-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\48135ed1-c57f-4ca1-b4fb-d636483c817a\\starticon3.exe\" --AutoStart"	starticon3.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
38	api.2ip.ua
31	api.2ip.ua
32	api.2ip.ua

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1632	2796	WerFault.exe	84

System Location Discovery: System Language Discovery 1 TTPs 3 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	starticon3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	starticon3.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2796	starticon3.exe
2796	starticon3.exe
4236	starticon3.exe
4236	starticon3.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2796 wrote to memory of 4408	2796	starticon3.exe	96
PID 2796 wrote to memory of 4408	2796	starticon3.exe	96
PID 2796 wrote to memory of 4408	2796	starticon3.exe	96
PID 2796 wrote to memory of 4236	2796	starticon3.exe	97
PID 2796 wrote to memory of 4236	2796	starticon3.exe	97
PID 2796 wrote to memory of 4236	2796	starticon3.exe	97

C:\Users\Admin\AppData\Local\Temp\starticon3.exe
"C:\Users\Admin\AppData\Local\Temp\starticon3.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2796
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\48135ed1-c57f-4ca1-b4fb-d636483c817a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:4408
- C:\Users\Admin\AppData\Local\Temp\starticon3.exe
  "C:\Users\Admin\AppData\Local\Temp\starticon3.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:4236
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 2072
  2⤵
  - Program crash
  PID:1632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2796 -ip 2796
1⤵
PID:1320

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
c9be626e9715952e9b70f92f912b9787

SHA1
aa2e946d9ad9027172d0d321917942b7562d6abe

SHA256
c13e8d22800c200915f87f71c31185053e4e60ca25de2e41e160e09cd2d815d4

SHA512
7581b7c593785380e9db3ae760af85c1a889f607a3cd2aa5a2695a0e5a0fe8ee751578e88f7d8c997faeda804e2fc2655d859bee2832eace526ed4379edaa3f5

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
98c04c0e2d40187af5d691b66df56dfb

SHA1
d799353d338bb7db7afd58f4e57fbe29734557ca

SHA256
8cb48572bd96cd1b8ed97b3ee70b498b8c4dce11c94b00668ba967ccb8057cda

SHA512
aa35105d05604a3080f62031ebd975e6ed471c6f803b63b9ab9fbb0c2b4db3951222c565d00f61b55547c1088dabbf5e6619cd0d10523782d004484cbce7d4d1

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

Filesize
170B

MD5
ba82d23cba0a6f50371a2aca11383ccb

SHA1
9c30d680ecc8f8b77d7c9c39303ec68be9694b34

SHA256
9880f50058e03c5613c5959b76ac490d7c2e0e41222c2d24d84742f3b6d13315

SHA512
fdb3de0f49964b66e1294d63d80b7f9a01412b5902bc79dc23ad528fc6b8222e2ed313b5f0336ac9a8afc3dc65eaaa097e1065b1f6aa57ebad4692e42c36767e

Download Submit
C:\Users\Admin\AppData\Local\48135ed1-c57f-4ca1-b4fb-d636483c817a\starticon3.exe

Filesize
725KB

MD5
e8bbb6d921b79101aea7d906a1798f3d

SHA1
4fd59822cdedd1b194d27d2c01a9cde6222de1bb

SHA256
7bc2928ce06e7db7bfe0bf3f2c2d2ff9df7f0a8041ea8c593dd0b912c1c3d3fd

SHA512
c525e07c65c7be43aa90568f98253b397919cd0f597b1ba446fed51a578ca1aae4c93fa59e1345b20e3216a676ba35c89c67d6ced6bea68da44a53989fa4d656

Download Submit
memory/2796-15-0x0000000006C20000-0x0000000006D3A000-memory.dmp

Filesize
1.1MB

Download
memory/2796-14-0x0000000000400000-0x0000000004F0E000-memory.dmp

Filesize
75.1MB

Download
memory/2796-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2796-1-0x0000000006B00000-0x0000000006B92000-memory.dmp

Filesize
584KB

Download
memory/2796-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2796-2-0x0000000006C20000-0x0000000006D3A000-memory.dmp

Filesize
1.1MB

Download
memory/4236-18-0x0000000000400000-0x0000000004F0E000-memory.dmp

Filesize
75.1MB

Download
memory/4236-25-0x0000000000400000-0x0000000004F0E000-memory.dmp

Filesize
75.1MB

Download
memory/4236-28-0x0000000000400000-0x0000000004F0E000-memory.dmp

Filesize
75.1MB

Download
memory/4236-29-0x0000000000400000-0x0000000004F0E000-memory.dmp

Filesize
75.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads