djvu | 38bc13ef112b2f17d4d1a80243fac6a521b5d58228984aae0752d79487fa3b66

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01/03/2025, 18:58

250301-xmhhrayp15 10

01/03/2025, 18:55

250301-xkqrcaypx7 10

Analysis

max time kernel
93s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04/12/2024, 19:31

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General

Target

ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
Size

917KB
MD5

d592e787314d1c327dbc2da117e1dc59
SHA1

ba3a26eaa200d53129e304078309758bbb3c95f1
SHA256

ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3
SHA512

1e805105ab482c752bd24afa028daa3e7bd83f0258510a6fa2ea0c90eb44d1eec590c926982252dbf3a28bb070befbaea5e78c00d556bd9b380a3c79f1480cf7
SSDEEP

24576:Hk5FAciH/EjiQXFPQ0NQaScQqYLQnasbbTq4cSJG:Hk5O/EjiuFP32CYL/wnqlUG

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://dell1.ug/hdfhgbdgbdbfgteerpenelop/cvnvbndtedfg/get.php

Attributes

extension
.gero
offline_id
CkRzIzWzRp3U1ooEeUkKN4owpKdqn4SHRoxPMtt1
payload_url
http://dell1.ug/files/penelop/updatewin1.exe

http://dell1.ug/files/penelop/updatewin2.exe

http://dell1.ug/files/penelop/updatewin.exe

http://dell1.ug/files/penelop/3.exe

http://dell1.ug/files/penelop/4.exe

http://dell1.ug/files/penelop/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-sTWdbjk1AY 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: 0156mJddLsdH

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral1/memory/4340-2-0x0000000006E90000-0x0000000006FAA000-memory.dmp	family_djvu
behavioral1/memory/4340-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4340-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4340-15-0x0000000006E90000-0x0000000006FAA000-memory.dmp	family_djvu
behavioral1/memory/4340-14-0x0000000000400000-0x0000000004EE3000-memory.dmp	family_djvu
behavioral1/memory/3340-22-0x0000000000400000-0x0000000004EE3000-memory.dmp	family_djvu
behavioral1/memory/4040-25-0x0000000000400000-0x0000000004EE3000-memory.dmp	family_djvu
behavioral1/memory/3340-28-0x0000000000400000-0x0000000004EE3000-memory.dmp	family_djvu
behavioral1/memory/3340-378-0x0000000000400000-0x0000000004EE3000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
djvu
Renames multiple (174) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe

Executes dropped EXE 1 IoCs

pid	Process
4040	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1780	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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f89826d1-4dc5-4b5f-97ed-4f2e82818dc2\\ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe\" --AutoStart"	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.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
13	api.2ip.ua
14	api.2ip.ua
19	api.2ip.ua
31	api.2ip.ua

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

System Information Discovery
T1082

Program crash 3 IoCs

pid	pid_target	Process	procid_target
2536	4340	WerFault.exe	81
5092	4040	WerFault.exe	101
3996	3340	WerFault.exe	83

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	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4340	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
4340	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
3340	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
3340	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
4040	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
4040	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
3340	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
3340	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4340 wrote to memory of 1780	4340	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe	82
PID 4340 wrote to memory of 1780	4340	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe	82
PID 4340 wrote to memory of 1780	4340	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe	82
PID 4340 wrote to memory of 3340	4340	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe	83
PID 4340 wrote to memory of 3340	4340	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe	83
PID 4340 wrote to memory of 3340	4340	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe	83

C:\Users\Admin\AppData\Local\Temp\ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
"C:\Users\Admin\AppData\Local\Temp\ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.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:4340
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\f89826d1-4dc5-4b5f-97ed-4f2e82818dc2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:1780
- C:\Users\Admin\AppData\Local\Temp\ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
  "C:\Users\Admin\AppData\Local\Temp\ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe" --Admin IsNotAutoStart IsNotTask
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3340
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3340 -s 1792
    3⤵
    - Program crash
    PID:3996
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4340 -s 1868
  2⤵
  - Program crash
  PID:2536

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4340 -ip 4340
1⤵
PID:2428

C:\Users\Admin\AppData\Local\f89826d1-4dc5-4b5f-97ed-4f2e82818dc2\ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
C:\Users\Admin\AppData\Local\f89826d1-4dc5-4b5f-97ed-4f2e82818dc2\ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe --Task
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:4040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4040 -s 1640
  2⤵
  - Program crash
  PID:5092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4040 -ip 4040
1⤵
PID:2972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 3340 -ip 3340
1⤵
PID:4692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

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
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
5b000b189f5387eec1f3217964104c2f

SHA1
eecbada8c2734cd8e6629ea3c4635e883331c037

SHA256
f48e66d51e27aeba28e5c95361e5c1afb28f1a5bdb043cbc9b12af581e6a9141

SHA512
04f0a0e0b5ee7761ae1046ea17f386d59072997ec64ccc755727f3a744301a8dc7f71d962a10323ae3e1becedfe615bb4b979800f12af9f7a819edc32877bb7a

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

Filesize
170B

MD5
67dc90f66ee215dd0b9d8e0a788ac276

SHA1
d8d891fbe208a2da7c2848d3ac9af1de5be99fcb

SHA256
ee9dab168ef8f4089402b0febb95f14a5b3258f4e2504a90f619041131a86d82

SHA512
711d5d90ea75fddd3fe341745c3c8a0f94b866ab6bc0f9a3fcb7f81fab58536f46eba21dd0ad486af960513924b595290493442228b4a02636a6189be8c75abf

Download Submit
C:\Users\Admin\AppData\Local\f89826d1-4dc5-4b5f-97ed-4f2e82818dc2\ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe

Filesize
917KB

MD5
d592e787314d1c327dbc2da117e1dc59

SHA1
ba3a26eaa200d53129e304078309758bbb3c95f1

SHA256
ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3

SHA512
1e805105ab482c752bd24afa028daa3e7bd83f0258510a6fa2ea0c90eb44d1eec590c926982252dbf3a28bb070befbaea5e78c00d556bd9b380a3c79f1480cf7

Download Submit
memory/3340-22-0x0000000000400000-0x0000000004EE3000-memory.dmp

Filesize
74.9MB

Download
memory/3340-28-0x0000000000400000-0x0000000004EE3000-memory.dmp

Filesize
74.9MB

Download
memory/3340-378-0x0000000000400000-0x0000000004EE3000-memory.dmp

Filesize
74.9MB

Download
memory/4040-25-0x0000000000400000-0x0000000004EE3000-memory.dmp

Filesize
74.9MB

Download
memory/4340-15-0x0000000006E90000-0x0000000006FAA000-memory.dmp

Filesize
1.1MB

Download
memory/4340-14-0x0000000000400000-0x0000000004EE3000-memory.dmp

Filesize
74.9MB

Download
memory/4340-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4340-1-0x0000000006DC0000-0x0000000006E8C000-memory.dmp

Filesize
816KB

Download
memory/4340-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4340-2-0x0000000006E90000-0x0000000006FAA000-memory.dmp

Filesize
1.1MB

Download