djvu | 38bc13ef112b2f17d4d1a80243fac6a521b5d58228984aae0752d79487fa3b66

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15/04/2025, 17:34

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15/04/2025, 06:16

14/04/2025, 08:06

14/04/2025, 07:59

14/04/2025, 07:22

14/04/2025, 07:16

11/04/2025, 21:39

01/04/2025, 21:24

Analysis

max time kernel
103s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
14/04/2025, 08:06

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Report Analysis Logs

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

Extracted

Path

F:\_readme.txt

Ransom Note

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: 0156mJddLsdHCkRzIzWzRp3U1ooEeUkKN4owpKdqn4SHRoxPMtt1

Emails

[email protected]

URLs

https://we.tl/t-sTWdbjk1AY

Signatures

Detected Djvu ransomware 9 IoCs

resource	yara_rule
behavioral5/memory/5556-2-0x0000000006CA0000-0x0000000006DBA000-memory.dmp	family_djvu
behavioral5/memory/5556-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral5/memory/5556-15-0x0000000006CA0000-0x0000000006DBA000-memory.dmp	family_djvu
behavioral5/memory/5556-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral5/memory/5556-14-0x0000000000400000-0x0000000004EE3000-memory.dmp	family_djvu
behavioral5/memory/4624-24-0x0000000000400000-0x0000000004EE3000-memory.dmp	family_djvu
behavioral5/memory/3464-29-0x0000000000400000-0x0000000004EE3000-memory.dmp	family_djvu
behavioral5/memory/4624-32-0x0000000000400000-0x0000000004EE3000-memory.dmp	family_djvu
behavioral5/memory/4624-368-0x0000000000400000-0x0000000004EE3000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
djvu
Renames multiple (166) 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-1-5-21-3975168204-1612096350-4002976354-1000\Control Panel\International\Geo\Nation	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe

Executes dropped EXE 1 IoCs

pid	Process
3464	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
876	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-1-5-21-3975168204-1612096350-4002976354-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a24e0ef1-cf18-43d2-859e-1f7a4888b8ce\\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
15	api.2ip.ua
16	api.2ip.ua
21	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
700	5556	WerFault.exe	85
4788	3464	WerFault.exe	99
4400	4624	WerFault.exe	90

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	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
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

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
5556	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
5556	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
4624	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
4624	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
3464	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
3464	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
4624	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
4624	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5556 wrote to memory of 876	5556	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe	88
PID 5556 wrote to memory of 876	5556	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe	88
PID 5556 wrote to memory of 876	5556	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe	88
PID 5556 wrote to memory of 4624	5556	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe	90
PID 5556 wrote to memory of 4624	5556	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe	90
PID 5556 wrote to memory of 4624	5556	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe	90

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:5556
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\a24e0ef1-cf18-43d2-859e-1f7a4888b8ce" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:876
- 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:4624
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4624 -s 1548
    3⤵
    - Program crash
    PID:4400
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5556 -s 2084
  2⤵
  - Program crash
  PID:700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 5556 -ip 5556
1⤵
PID:3688

C:\Users\Admin\AppData\Local\a24e0ef1-cf18-43d2-859e-1f7a4888b8ce\ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
C:\Users\Admin\AppData\Local\a24e0ef1-cf18-43d2-859e-1f7a4888b8ce\ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe --Task
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:3464
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 1092
  2⤵
  - Program crash
  PID:4788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 3464 -ip 3464
1⤵
PID:2688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 4624 -ip 4624
1⤵
PID:4408

Network

MITRE ATT&CK Enterprise v16

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
4a90329071ae30b759d279cca342b0a6

SHA1
0ac7c4f3357ce87f37a3a112d6878051c875eda5

SHA256
fb6a7c3edcd7b97fabc18855102a39fc4d6d3f82c0fdd39b1667807b71b9c49b

SHA512
f0e206053d4369437c2c0f1f90f0fd03d631e4b9859d807049b41efde823d64cf4d75c28316d932360f7c03bd409e923c8bc2d4f5959361feacecfcf101ae823

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

Filesize
530B

MD5
1fbb37f79b317a9a248e7c4ce4f5bac5

SHA1
0ff4d709ebf17be0c28e66dc8bf74672ca28362a

SHA256
6fb1b8e593cb0388f67ead35313a230f524657317ea86271b3a97362e5ec6ad9

SHA512
287e1d62c9ceb660965c266f677c467fbb997c2f5dcd1d63e185e266488aafc3489ac1d3feec81d10f01ce4a72e61a8bc4e124f137ce8675a220aa7797002e74

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

Filesize
174B

MD5
ca8c09db8fa13b057ac759f5e8fb427e

SHA1
c235d78ab9aa739d41a60e343b804566483b0e56

SHA256
645a1341f8c26f86ead1f554021f0fa37485f029df4aa1357e3a194899a6f22a

SHA512
be7e92043860a304eac99ea056fcfce475580f7afc8df16be8617f2f89fc9249a07549885b6749e2b21dc11517235e9f2719117b35db54513ffc83bd8c97df44

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

Filesize
170B

MD5
09c7a9d096a98c83ebf905199e97c057

SHA1
ff70153aa6115f6ce99b1655dccee7899994599a

SHA256
e0d53030951d4249ab302d0e4b52945ce2b12891dcbe891ad53971101ea70b72

SHA512
0ee0d4bddcfbfe8f4d38e1647d72d6c8f659c75193b6222c633993800577bcfda399931549c7267d4f5f5bceefdb6efece6af2d4872f6ea027e81310b9f4214a

Download Submit
C:\Users\Admin\AppData\Local\a24e0ef1-cf18-43d2-859e-1f7a4888b8ce\ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe

Filesize
917KB

MD5
d592e787314d1c327dbc2da117e1dc59

SHA1
ba3a26eaa200d53129e304078309758bbb3c95f1

SHA256
ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3

SHA512
1e805105ab482c752bd24afa028daa3e7bd83f0258510a6fa2ea0c90eb44d1eec590c926982252dbf3a28bb070befbaea5e78c00d556bd9b380a3c79f1480cf7

Download Submit
F:\_readme.txt

Filesize
1KB

MD5
4d007b2166778d3f146fe0b431c9bb50

SHA1
744a7fb25baf3e3e1bbf2470dd5442e58c33f154

SHA256
db862ad695d25cb1f9120ecb485147852baf87c0350652492a760a1612924b22

SHA512
bfa61a8d2a6bb5cab0763b2524f94e8d9a70612efd156897dc896ee53297bd85b4fa8aae5036d1a9ccec4aa60b1cbd271f4cc11945e18117693b651cd74d533d

Download Submit
memory/3464-29-0x0000000000400000-0x0000000004EE3000-memory.dmp

Filesize
74.9MB

Download
memory/4624-24-0x0000000000400000-0x0000000004EE3000-memory.dmp

Filesize
74.9MB

Download
memory/4624-32-0x0000000000400000-0x0000000004EE3000-memory.dmp

Filesize
74.9MB

Download
memory/4624-368-0x0000000000400000-0x0000000004EE3000-memory.dmp

Filesize
74.9MB

Download
memory/5556-14-0x0000000000400000-0x0000000004EE3000-memory.dmp

Filesize
74.9MB

Download
memory/5556-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5556-15-0x0000000006CA0000-0x0000000006DBA000-memory.dmp

Filesize
1.1MB

Download
memory/5556-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5556-1-0x0000000006BD0000-0x0000000006C97000-memory.dmp

Filesize
796KB

Download
memory/5556-2-0x0000000006CA0000-0x0000000006DBA000-memory.dmp

Filesize
1.1MB

Download