djvu | db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3

Analysis

max time kernel
145s
max time network
139s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
22-12-2024 01:58

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General

Target

JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
Size

794KB
MD5

efd086526dfe4c4f996223a0eeda211a
SHA1

4a24572a3f4d71c2600e5b8ea8b8de9c4550da28
SHA256

db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3
SHA512

4c0fd8feaf2775f9581ac3a2577b0e988284f44f8c26fe7bd2f1604cfc636bec1f17def1110eba7f5c2b548e4b4baa1bc6619738d1dfce792313447086d90eff
SSDEEP

24576:3DVOtagkDGYTv0Jb/ZXNhs0YsWRsFx3hGB:3DM6cJ/ZHMpCG

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://fuyt.org/fhsgtsspen6/get.php

Attributes

extension
.nuhb
offline_id
PfLhykvDxmCghCq8peuxBtQ3c0QBuANi8WUkuet1
payload_url
http://zerit.top/dl/build2.exe

http://fuyt.org/files/1/build3.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-c565B1ILoZ 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: 0453Jbdio

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2548-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1116-5-0x0000000001E60000-0x0000000001F7B000-memory.dmp	family_djvu
behavioral1/memory/2548-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2548-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2548-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-62-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-63-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-60-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2616-64-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Djvu family
djvu

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2736	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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\910632dd-f83e-49f9-9190-204391741e72\\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe\" --AutoStart"	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.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
4	api.2ip.ua
5	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1116 set thread context of 2548	1116	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	31
PID 2140 set thread context of 2616	2140	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	35

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

System Information Discovery
T1082

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	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2548	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
2548	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
2616	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
2616	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1116 wrote to memory of 2548	1116	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	31
PID 1116 wrote to memory of 2548	1116	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	31
PID 1116 wrote to memory of 2548	1116	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	31
PID 1116 wrote to memory of 2548	1116	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	31
PID 1116 wrote to memory of 2548	1116	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	31
PID 1116 wrote to memory of 2548	1116	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	31
PID 1116 wrote to memory of 2548	1116	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	31
PID 1116 wrote to memory of 2548	1116	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	31
PID 1116 wrote to memory of 2548	1116	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	31
PID 1116 wrote to memory of 2548	1116	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	31
PID 1116 wrote to memory of 2548	1116	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	31
PID 2548 wrote to memory of 2736	2548	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	33
PID 2548 wrote to memory of 2736	2548	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	33
PID 2548 wrote to memory of 2736	2548	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	33
PID 2548 wrote to memory of 2736	2548	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	33
PID 2548 wrote to memory of 2140	2548	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	34
PID 2548 wrote to memory of 2140	2548	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	34
PID 2548 wrote to memory of 2140	2548	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	34
PID 2548 wrote to memory of 2140	2548	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	34
PID 2140 wrote to memory of 2616	2140	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	35
PID 2140 wrote to memory of 2616	2140	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	35
PID 2140 wrote to memory of 2616	2140	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	35
PID 2140 wrote to memory of 2616	2140	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	35
PID 2140 wrote to memory of 2616	2140	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	35
PID 2140 wrote to memory of 2616	2140	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	35
PID 2140 wrote to memory of 2616	2140	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	35
PID 2140 wrote to memory of 2616	2140	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	35
PID 2140 wrote to memory of 2616	2140	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	35
PID 2140 wrote to memory of 2616	2140	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	35
PID 2140 wrote to memory of 2616	2140	JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe	35

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1116
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2548
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\910632dd-f83e-49f9-9190-204391741e72" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2736
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2140
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2616

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

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
4434b57d676b260286df37eb95e421f8

SHA1
9c3c507db712156f8dc84dfeb091196d5c99d470

SHA256
847a46fabc85f9de290669a45f620bb7fbfebf97c6f01f4aeb489c7433939695

SHA512
0016b4f8f40568dc0b4cd499e5f8dbb71187f363b9cd42a7fbbee3c47e7f8b0df0fb8a7065fe21069c24bea50e2c8c0ea40547bf92839cf8da4fa4ec1d0b868d

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

Filesize
170B

MD5
cb45f74dc01248bd274dd127fdebcd05

SHA1
98481a631a869a186e2ba2596e2809fab942375f

SHA256
6f3fef1db239020def19e2adf3d080a2bb57da2fa4f0bec28c0ca579773172b8

SHA512
f2226ea0f735ff5cdd5b0601c383ab49806594e4ccc8db05c7ea7a5e93c1e20f814f03724d233b71756799cfd1349968085961204953be8d8d8b9f0cf439d68a

Download Submit
C:\Users\Admin\AppData\Local\910632dd-f83e-49f9-9190-204391741e72\JaffaCakes118_db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3.exe

Filesize
794KB

MD5
efd086526dfe4c4f996223a0eeda211a

SHA1
4a24572a3f4d71c2600e5b8ea8b8de9c4550da28

SHA256
db15fe4dbfe6a64ee56c4cfae9b3ee2326120af78e18447e652d4f391803b9b3

SHA512
4c0fd8feaf2775f9581ac3a2577b0e988284f44f8c26fe7bd2f1604cfc636bec1f17def1110eba7f5c2b548e4b4baa1bc6619738d1dfce792313447086d90eff

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab2221.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/1116-6-0x00000000004E0000-0x0000000000571000-memory.dmp

Filesize
580KB

Download
memory/1116-5-0x0000000001E60000-0x0000000001F7B000-memory.dmp

Filesize
1.1MB

Download
memory/1116-0-0x00000000004E0000-0x0000000000571000-memory.dmp

Filesize
580KB

Download
memory/1116-1-0x00000000004E0000-0x0000000000571000-memory.dmp

Filesize
580KB

Download
memory/2140-27-0x0000000000330000-0x00000000003C1000-memory.dmp

Filesize
580KB

Download
memory/2140-28-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2140-34-0x0000000000400000-0x00000000004D1000-memory.dmp

Filesize
836KB

Download
memory/2548-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2548-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2548-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2548-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2548-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-62-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-63-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-60-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2616-64-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download