djvu | 11feda943a94b282ac17c6baad22d80a71e8018909ad267e6b7970d035d995dd

user interaction
yes
max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20251231-en
resource tags

arch:x64arch:x86image:win10v2004-20251231-enlocale:en-usos:windows10-2004-x64system
submitted
10/01/2026, 15:59

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General

Target
ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
Size 917KB
Sample260110-te14caev5f
SHA256 ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3
MD5 d592e787314d1c327dbc2da117e1dc59
SHA1 ba3a26eaa200d53129e304078309758bbb3c95f1
SHA512 1e805105ab482c752bd24afa028daa3e7bd83f0258510a6fa2ea0c90eb44d1eec590c926982252dbf3a28bb070befbaea5e78c00d556bd9b380a3c79f1480cf7
SSDEEP 24576:Hk5FAciH/EjiQXFPQ0NQaScQqYLQnasbbTq4cSJG:Hk5O/EjiuFP32CYL/wnqlUG
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

discovery djvu 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 8 IoCs

resource	yara_rule
behavioral1/memory/1580-2-0x0000000006EA0000-0x0000000006FBA000-memory.dmp	family_djvu
behavioral1/memory/1580-14-0x0000000006EA0000-0x0000000006FBA000-memory.dmp	family_djvu
behavioral1/memory/1580-13-0x0000000000400000-0x0000000004EE3000-memory.dmp	family_djvu
behavioral1/memory/4380-21-0x0000000000400000-0x0000000004EE3000-memory.dmp	family_djvu
behavioral1/memory/5844-22-0x0000000000400000-0x0000000004EE3000-memory.dmp	family_djvu
behavioral1/memory/1688-26-0x0000000000400000-0x0000000004EE3000-memory.dmp	family_djvu
behavioral1/memory/5844-28-0x0000000000400000-0x0000000004EE3000-memory.dmp	family_djvu
behavioral1/memory/5844-349-0x0000000000400000-0x0000000004EE3000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
djvu
Renames multiple (159) 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-1-5-21-2177663406-413462311-1670868024-1000\Control Panel\International\Geo\Nation	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe

Executes dropped EXE 2 IoCs

pid	Process
4380	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
1688	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3908	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-1-5-21-2177663406-413462311-1670868024-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\2d29ee59-b479-41df-a794-64aa9a94ddf0\\ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe\" --AutoStart"	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe

Looks up external IP address via web service 5 IoCs

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

flow	ioc
29	api.2ip.ua
37	api.2ip.ua
24	api.2ip.ua
25	api.2ip.ua
28	api.2ip.ua

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

System Information Discovery
T1082

Program crash 4 IoCs

pid	pid_target	Process	procid_target
724	1580	WerFault.exe	84
5044	4380	WerFault.exe	93
1416	1688	WerFault.exe	106
4188	5844	WerFault.exe	88

System Location Discovery: System Language Discovery 1 TTPs 5 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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1580	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
1580	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
4380	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
4380	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
5844	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
5844	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
1688	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
1688	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
5844	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
5844	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1580 wrote to memory of 3908	1580	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe	87
PID 1580 wrote to memory of 5844	1580	ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe	88

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:1580
- C:\Windows\SysWOW64\icacls.exe
  icacls "C:\Users\Admin\AppData\Local\2d29ee59-b479-41df-a794-64aa9a94ddf0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:3908
- 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:5844
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5844 -s 1780
    3⤵
    - Program crash
    PID:4188
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 1664
  2⤵
  - Program crash
  PID:724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1580 -ip 1580
1⤵
PID:1780

C:\Users\Admin\AppData\Local\2d29ee59-b479-41df-a794-64aa9a94ddf0\ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
C:\Users\Admin\AppData\Local\2d29ee59-b479-41df-a794-64aa9a94ddf0\ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:4380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4380 -s 1576
  2⤵
  - Program crash
  PID:5044

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4380 -ip 4380
1⤵
PID:1768

C:\Users\Admin\AppData\Local\2d29ee59-b479-41df-a794-64aa9a94ddf0\ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
C:\Users\Admin\AppData\Local\2d29ee59-b479-41df-a794-64aa9a94ddf0\ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe --Task
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:1688
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1688 -s 1604
  2⤵
  - Program crash
  PID:1416

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1688 -ip 1688
1⤵
PID:4836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 5844 -ip 5844
1⤵
PID:5244

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

8B2B9A00839EED1DFDCCC3BFC2F5DF12

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Size 1KB
SHA256 70361fc5bd4a7fbfa22050ccd859760c6116cf7d33bde25cb161d909d05030dc
MD5 4f53605ee73bf1920f9e0fba0d5ad6e1
SHA1 a5e8ec2eed580a327ddfd06260683e06f9b18933
SHA512 fe47f4dd7fed6677496a5e7df825d4a981f1a4a7c30ef49e250a3966fdd74173d58b0d03905c0abdd1e21bb04d84ca496a6bd3165f3f6d0f32415ca9976105b1
TLSH
T12831AF4EA2113067D6417F72D8CA7E83CDB132476BCBD46B18446E4229AAFC15FC80C5
MD5 SHA1 SHA512 TLSH

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B46811C17859FFB409CF0E904A4AA8F8

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
Size 530B
SHA256 6fb1b8e593cb0388f67ead35313a230f524657317ea86271b3a97362e5ec6ad9
MD5 1fbb37f79b317a9a248e7c4ce4f5bac5
SHA1 0ff4d709ebf17be0c28e66dc8bf74672ca28362a
SHA512 287e1d62c9ceb660965c266f677c467fbb997c2f5dcd1d63e185e266488aafc3489ac1d3feec81d10f01ce4a72e61a8bc4e124f137ce8675a220aa7797002e74
TLSH
T1A7F0590C901C22B3C995BF61DFE6ECD3DCB6328177D5A10328894E411562F8A6FD54E6
MD5 SHA1 SHA512 TLSH

Submit Download

8B2B9A00839EED1DFDCCC3BFC2F5DF12

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Size 174B
SHA256 7fd88573020a8905ff4665c014e239617e1f5d68e85cafb5d76d6b123a9de6ac
MD5 8c33944385e9f4a034327aaacc37f3e2
SHA1 687aab1604052462da11c230c83f93d0553af6c4
SHA512 1f16496706dd36c91cfd428f8aae781bc6f42b4b9aece4afd3c0b81267604eb1893ebf8a3af663b44dd64da37e7024f801c9930d1e2309b8f20880c5eaf89c86
TLSH
T120C09B1137214F14F135AE7F1952661057F9F6108EB3431527B4322D7C16A41ACB9D07
MD5 SHA1 SHA512 TLSH

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B46811C17859FFB409CF0E904A4AA8F8

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Size 170B
SHA256 e41836da24f21633528321551ddf01578d985ebebe95a6183a2e9e5ff8cbac25
MD5 627827a590f50182858753f763fa346a
SHA1 216675d64fce2505aba0e254d760f72666f87f48
SHA512 c7d530342a9b9f7e2a14795991cf8c0a515c0fc87961d420a4aa52770c6a30d4f9b94515354af6c47c40c800e52f0be30dbf5008f38546f3a4bc9b83c47389f8
TLSH
T129C09B043325C755F00541BF7D655F1066FAF642E5669305077411549514EC55CF4F05
MD5 SHA1 SHA512 TLSH

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ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe

Path C:\Users\Admin\AppData\Local\2d29ee59-b479-41df-a794-64aa9a94ddf0\ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3.exe
Size 917KB
SHA256 ec4f09f82d932cdd40700a74a8875b73a783cbaab1f313286adf615a5336d7d3
MD5 d592e787314d1c327dbc2da117e1dc59
SHA1 ba3a26eaa200d53129e304078309758bbb3c95f1
SHA512 1e805105ab482c752bd24afa028daa3e7bd83f0258510a6fa2ea0c90eb44d1eec590c926982252dbf3a28bb070befbaea5e78c00d556bd9b380a3c79f1480cf7
SSDEEP 24576:Hk5FAciH/EjiQXFPQ0NQaScQqYLQnasbbTq4cSJG:Hk5O/EjiuFP32CYL/wnqlUG
TLSH
T1E315221262D08077E49213B94A34EF1A89ED7D710FA1EED777D8014EAE216D0973BF92
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1580-14-0x0000000006EA0000-0x0000000006FBA000-memory.dmp

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memory/1580-13-0x0000000000400000-0x0000000004EE3000-memory.dmp

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memory/1580-1-0x0000000006DC0000-0x0000000006E93000-memory.dmp

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memory/1580-2-0x0000000006EA0000-0x0000000006FBA000-memory.dmp

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memory/1688-26-0x0000000000400000-0x0000000004EE3000-memory.dmp

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memory/4380-21-0x0000000000400000-0x0000000004EE3000-memory.dmp

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memory/5844-22-0x0000000000400000-0x0000000004EE3000-memory.dmp

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memory/5844-28-0x0000000000400000-0x0000000004EE3000-memory.dmp

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memory/5844-349-0x0000000000400000-0x0000000004EE3000-memory.dmp

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