djvu | 8f3920415bc1e2728e3d705fd33d1253b1df26297b1760e2433fe9db94081692

Analysis

max time kernel
149s
max time network
119s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
16/04/2024, 15:14

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General

Target
f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe
Size 744KB
Sample240416-smnybaeh21
SHA256 8f3920415bc1e2728e3d705fd33d1253b1df26297b1760e2433fe9db94081692
MD5 f3c104803643ed3d8a244ef51d90595c
SHA1 23ab76f6332e7e84630e8b97646386734dc9e441
SHA512 ad2996df5a7d01e8808df5d2a0025b6bde720a7068ac89a63d7b648b8b5b3716571a28743277b09bbc884992864e0ca6602e3958268f79269526276a88423932
SSDEEP 12288:44oCvP5Z8jGnrxdLaP24G2sdX/bKiuuxRNhYALUg3w+jFRbTD6f38LPLSgzknmwB:7fFrxdBFdWPuzYyUg3wafD6yB
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://astdg.top/fhsgtsspen6/get.php

Attributes

extension
.nooa
offline_id
PLtnD1U6oAmgxgJ2nJik1mY9SwUQg07CiN0zSet1
payload_url
http://securebiz.org/dl/build2.exe

http://astdg.top/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-CnI3tI6Ktv 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: 0322gDrgo

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral1/memory/2884-3-0x00000000046A0000-0x00000000047BB000-memory.dmp	family_djvu
behavioral1/memory/2828-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2828-7-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2828-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2828-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2464-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2464-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2464-48-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2464-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2464-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2464-53-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2464-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2464-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2464-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2464-58-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2596	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-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\70bdb5ba-6b9b-45de-89c3-ad0f59f6f7fa\\f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe\" --AutoStart"	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.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 2884 set thread context of 2828	2884	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	28
PID 2948 set thread context of 2464	2948	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	31

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2828	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe
2464	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe
2464	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 2828	2884	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	28
PID 2884 wrote to memory of 2828	2884	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	28
PID 2884 wrote to memory of 2828	2884	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	28
PID 2884 wrote to memory of 2828	2884	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	28
PID 2884 wrote to memory of 2828	2884	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	28
PID 2884 wrote to memory of 2828	2884	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	28
PID 2884 wrote to memory of 2828	2884	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	28
PID 2884 wrote to memory of 2828	2884	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	28
PID 2884 wrote to memory of 2828	2884	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	28
PID 2884 wrote to memory of 2828	2884	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	28
PID 2884 wrote to memory of 2828	2884	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	28
PID 2828 wrote to memory of 2596	2828	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	29
PID 2828 wrote to memory of 2596	2828	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	29
PID 2828 wrote to memory of 2596	2828	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	29
PID 2828 wrote to memory of 2596	2828	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	29
PID 2828 wrote to memory of 2948	2828	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	30
PID 2828 wrote to memory of 2948	2828	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	30
PID 2828 wrote to memory of 2948	2828	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	30
PID 2828 wrote to memory of 2948	2828	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	30
PID 2948 wrote to memory of 2464	2948	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	31
PID 2948 wrote to memory of 2464	2948	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	31
PID 2948 wrote to memory of 2464	2948	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	31
PID 2948 wrote to memory of 2464	2948	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	31
PID 2948 wrote to memory of 2464	2948	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	31
PID 2948 wrote to memory of 2464	2948	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	31
PID 2948 wrote to memory of 2464	2948	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	31
PID 2948 wrote to memory of 2464	2948	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	31
PID 2948 wrote to memory of 2464	2948	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	31
PID 2948 wrote to memory of 2464	2948	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	31
PID 2948 wrote to memory of 2464	2948	f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Users\Admin\AppData\Local\Temp\f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2828
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\70bdb5ba-6b9b-45de-89c3-ad0f59f6f7fa" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2596
- - C:\Users\Admin\AppData\Local\Temp\f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2948
  - - C:\Users\Admin\AppData\Local\Temp\f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2464

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 1KB
SHA256 7eb17f03f49ad906d62f715fe4e81e9341f8e7e900e429bc83d0787340dfa42f
MD5 8a19e2f05bb9c727f7fb24ef7e6541e7
SHA1 fc4e212ec0c090fffc2c1b9c70fe5cb6c77592db
SHA512 82b40631302b2338d74c48aaf0b848435020936eb99a1945a6a5397e123a6107eb5681d458595af641d4078383de41370afc882d94aec89e4c65f51e86c4c0d4
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 724B
SHA256 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
MD5 8202a1cd02e7d69597995cabbe881a12
SHA1 8858d9d934b7aa9330ee73de6c476acf19929ff6
SHA512 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
MD5 SHA1 SHA512

Submit Download

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 83aaef19a3d34db7bbb898f0051b59abb95cb04bfbbc3617f3183cac15f47754
MD5 13e2281654008740e25b0dfb1e7a55e7
SHA1 3b76e162197ba13f2e402ad6b97f6c436cf91a09
SHA512 8290a550bcc0950f863798d4d6e80c65aa9735a2f8e47cfd8c27ba2e68f51e75a61cb8f5b9fc8216d657945a6e55557ffe22763f1b3fe907804a209e0f5e7dca
MD5 SHA1 SHA512

Submit Download

94308059B57B3142E455B38A6EB92015

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Size 344B
SHA256 2c25f58f03a1efee158f055d67981cbd093d995e2a11d33255478b728476e44f
MD5 30c45ab09df22660547e889c96da76a1
SHA1 80b8dfd007e3ca04bf4400b5ef89976705b80204
SHA512 487595412822c191823e03c855d7db4ed17b89c2ee2d66d0e4c83b14dbd49e6fcc5e7d86f3b5e9e2ec89aa558f225d38cffa06601c45d125819e9fdf2e3bd133
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 d2e47557feb053171f7c40828981c073a06a9c4a2b61024312617e852c1e3f4b
MD5 a8400a52725c2a726b57b3f194526989
SHA1 11728aa1b25519ffa3b1a8fcec3493b58f34aeec
SHA512 e61f938c15ba235f63f1a690d1df0c4587586549e79fe3904b48f419573cba3516c73065073c0388bed2437288f14548d2e6ad12f4faaa8f32197deb54a67ec1
MD5 SHA1 SHA512

Submit Download

f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe

Path C:\Users\Admin\AppData\Local\70bdb5ba-6b9b-45de-89c3-ad0f59f6f7fa\f3c104803643ed3d8a244ef51d90595c_JaffaCakes118.exe
Size 744KB
SHA256 8f3920415bc1e2728e3d705fd33d1253b1df26297b1760e2433fe9db94081692
MD5 f3c104803643ed3d8a244ef51d90595c
SHA1 23ab76f6332e7e84630e8b97646386734dc9e441
SHA512 ad2996df5a7d01e8808df5d2a0025b6bde720a7068ac89a63d7b648b8b5b3716571a28743277b09bbc884992864e0ca6602e3958268f79269526276a88423932
SSDEEP 12288:44oCvP5Z8jGnrxdLaP24G2sdX/bKiuuxRNhYALUg3w+jFRbTD6f38LPLSgzknmwB:7fFrxdBFdWPuzYyUg3wafD6yB
MD5 SHA1 SHA512 SSDEEP

Submit Download

Cab3524.tmp

Path C:\Users\Admin\AppData\Local\Temp\Cab3524.tmp
Size 65KB
SHA256 c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
MD5 ac05d27423a85adc1622c714f2cb6184
SHA1 b0fe2b1abddb97837ea0195be70ab2ff14d43198
SHA512 6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d
SSDEEP 1536:drFvD2YSE/sFDqV0FJJynkAhftCvMd3coa282frgW1qgNzU:drVDJSeaDqV0FJwLhVkr282fF5U
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2464-35-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2464-48-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2464-58-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2464-57-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2464-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2464-55-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2464-56-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2464-53-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2464-50-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2464-49-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2828-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2828-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2828-7-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2828-8-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2828-26-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2884-1-0x0000000000220000-0x00000000002B2000-memory.dmp

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memory/2884-3-0x00000000046A0000-0x00000000047BB000-memory.dmp

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memory/2884-0-0x0000000000220000-0x00000000002B2000-memory.dmp

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memory/2948-27-0x0000000000220000-0x00000000002B2000-memory.dmp

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memory/2948-32-0x0000000000220000-0x00000000002B2000-memory.dmp

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