djvu | a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51

Analysis

max time kernel
143s
max time network
35s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
23-12-2024 15:36

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General

Target

JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe
Size

794KB
MD5

43a54331fd7de4f56a2c17941f346637
SHA1

238938de018a0e38c19a2d2a38287ac10ea92209
SHA256

a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51
SHA512

0d3dfb1913a0633ed42aec834fb6fec33c05b4f91ca21ad0689572a7c3eedaa42d435ae0913f0de547fd8c20a8bedd7e58eec5e63c95b43666d370728bfecc53
SSDEEP

12288:phZ/cYe2dxXbiJbjlUo77KOcY4iwb7ay5f3puUj8Ny0eiJRaSEWvgwY:tze2zuWoHp4iPc31Aw0bljvv

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://ugll.org/test1/get.php

Attributes

extension
.nnuz
offline_id
vBBkNb2o254Xzi3oCcyyfpBNyU9yOZKLh1HH5Mt1
payload_url
http://zerit.top/dl/build2.exe

http://ugll.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-wYSZeUnrpa 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: 0485JIjdm

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/908-2-0x0000000001E80000-0x0000000001F9B000-memory.dmp	family_djvu
behavioral1/memory/2312-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2312-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2312-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2312-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2760-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2760-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2760-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2760-52-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2760-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2760-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2760-60-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2760-59-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2760-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2760-61-0x0000000000400000-0x0000000000537000-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
2748	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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\349e4ccc-ebd8-473c-af38-9599178c128e\\JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe\" --AutoStart"	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.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
3	api.2ip.ua
4	api.2ip.ua
9	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 908 set thread context of 2312	908	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	29
PID 2624 set thread context of 2760	2624	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	32

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_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2312	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe
2312	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe
2760	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe
2760	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 908 wrote to memory of 2312	908	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	29
PID 908 wrote to memory of 2312	908	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	29
PID 908 wrote to memory of 2312	908	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	29
PID 908 wrote to memory of 2312	908	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	29
PID 908 wrote to memory of 2312	908	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	29
PID 908 wrote to memory of 2312	908	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	29
PID 908 wrote to memory of 2312	908	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	29
PID 908 wrote to memory of 2312	908	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	29
PID 908 wrote to memory of 2312	908	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	29
PID 908 wrote to memory of 2312	908	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	29
PID 908 wrote to memory of 2312	908	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	29
PID 2312 wrote to memory of 2748	2312	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	30
PID 2312 wrote to memory of 2748	2312	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	30
PID 2312 wrote to memory of 2748	2312	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	30
PID 2312 wrote to memory of 2748	2312	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	30
PID 2312 wrote to memory of 2624	2312	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	31
PID 2312 wrote to memory of 2624	2312	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	31
PID 2312 wrote to memory of 2624	2312	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	31
PID 2312 wrote to memory of 2624	2312	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	31
PID 2624 wrote to memory of 2760	2624	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	32
PID 2624 wrote to memory of 2760	2624	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	32
PID 2624 wrote to memory of 2760	2624	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	32
PID 2624 wrote to memory of 2760	2624	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	32
PID 2624 wrote to memory of 2760	2624	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	32
PID 2624 wrote to memory of 2760	2624	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	32
PID 2624 wrote to memory of 2760	2624	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	32
PID 2624 wrote to memory of 2760	2624	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	32
PID 2624 wrote to memory of 2760	2624	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	32
PID 2624 wrote to memory of 2760	2624	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	32
PID 2624 wrote to memory of 2760	2624	JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:908
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2312
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\349e4ccc-ebd8-473c-af38-9599178c128e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2748
- - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2624
  - - C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      PID:2760

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
938f043361eb9cda9fcfa0a19b8a20ad

SHA1
a11411aa7c976e7c212ae7806c6772e5086861ec

SHA256
407d5f5f7b6f30d967273e47ce82a54c1aeda8548d81728a2680e84db91e8853

SHA512
a08e337aa8c2524aed9504e7da153f5563ad6c4c23fba5245a88482939df30ce3b66b7e35fd3d449951937e3a815fb75b9ad89e1f68a14995f4d6d53c374a3eb

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
8eb91aa8e9ef0483df2f6628382601fc

SHA1
b669c8089e1606473b013b5ff68f9fc19316cbf7

SHA256
a44d7f0bd586d9c202361862247da889e18bc3b20a99304e3bff9bc5f55fe850

SHA512
12d270168a922784ce1363b5c05eb4a7fe04741f3b4eb3d7ab33688c0fd12b4b66609736c94d056d95df5e4adad3d3f8a478023fb42ed550002bea2d8c2e3d9b

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

Filesize
170B

MD5
e57e7e2c91e0ecef961ae19bf09dd3b3

SHA1
215edd2b6a97a1b940a9821328f469ea0818871d

SHA256
e17c687ed5aeba45597672769951a4a76d77011c7028ff93485d62d3ec8a9e1c

SHA512
74c8781e37136d7a42fb8a8060b0886a19b0764c75aafec9e67078db900630e32ff793a400bdea7880d98d5f1db475e5e10975ccbdb1ff55c2aa3c6e5d85aee0

Download Submit
C:\Users\Admin\AppData\Local\349e4ccc-ebd8-473c-af38-9599178c128e\JaffaCakes118_a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51.exe

Filesize
794KB

MD5
43a54331fd7de4f56a2c17941f346637

SHA1
238938de018a0e38c19a2d2a38287ac10ea92209

SHA256
a77ddde732c33e1faf100031351f141b7afa88525c5ac6a03805f7e59720ad51

SHA512
0d3dfb1913a0633ed42aec834fb6fec33c05b4f91ca21ad0689572a7c3eedaa42d435ae0913f0de547fd8c20a8bedd7e58eec5e63c95b43666d370728bfecc53

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab8585.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/908-1-0x0000000000580000-0x0000000000612000-memory.dmp

Filesize
584KB

Download
memory/908-2-0x0000000001E80000-0x0000000001F9B000-memory.dmp

Filesize
1.1MB

Download
memory/908-7-0x0000000000580000-0x0000000000612000-memory.dmp

Filesize
584KB

Download
memory/908-0-0x0000000000580000-0x0000000000612000-memory.dmp

Filesize
584KB

Download
memory/2312-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2312-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2312-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2312-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2312-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2624-36-0x0000000000400000-0x000000000050B000-memory.dmp

Filesize
1.0MB

Download
memory/2624-31-0x0000000000400000-0x000000000050B000-memory.dmp

Filesize
1.0MB

Download
memory/2624-30-0x0000000000220000-0x00000000002B2000-memory.dmp

Filesize
584KB

Download
memory/2760-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2760-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2760-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2760-52-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2760-53-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2760-55-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2760-60-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2760-59-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2760-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2760-61-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download