Analysis
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max time kernel
148s -
max time network
130s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
29-11-2024 18:04
Static task
static1
Behavioral task
behavioral1
Sample
b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
Resource
win10v2004-20241007-en
General
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Target
b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
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Size
831KB
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MD5
b2f294347754b834dfa0798a7f80dc89
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SHA1
a62a785570f2302af02fa981a279afcb371c7d49
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SHA256
f911d9fe94c6aa35874faa758432168c6846c24b010e8f351f874ac6830c2a2d
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SHA512
4e5195423198d4ea5f1742e9ded4598153a1a40ae1df65796cd457c75ffdeb433cebf85d6fcc5b527d2d2409487104386ad6073e071e6843d712f05c114a265d
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SSDEEP
24576:htVEx77FqKymt0pA+zuk4Bce6nonkZI98UWcPUIX:vk7FcmwA+zF4WXoR98A
Malware Config
Extracted
djvu
http://astdg.top/fhsgtsspen6/get.php
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extension
.reqg
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offline_id
ioYmb0jtMMtue7xjmkS3WQWGWLR8FTQhb2giQtt1
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payload_url
http://securebiz.org/dl/build2.exe
http://astdg.top/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 16 IoCs
resource yara_rule behavioral1/memory/2236-5-0x0000000000990000-0x0000000000AAB000-memory.dmp family_djvu behavioral1/memory/2208-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2208-8-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2208-9-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2208-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2800-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2800-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2800-52-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2800-51-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2800-53-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2800-57-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2800-59-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2800-60-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2800-61-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2800-62-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1032-94-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Djvu family
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Executes dropped EXE 2 IoCs
pid Process 3048 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 1032 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 2744 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c854fe24-77ba-42bf-ad6b-80cce756747d\\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe\" --AutoStart" b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.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 4 api.2ip.ua 5 api.2ip.ua 9 api.2ip.ua 25 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 2236 set thread context of 2208 2236 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 30 PID 2736 set thread context of 2800 2736 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 35 PID 3048 set thread context of 1032 3048 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 41 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2208 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 2208 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 2800 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 2800 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 1032 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 1032 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe -
Suspicious use of WriteProcessMemory 45 IoCs
description pid Process procid_target PID 2236 wrote to memory of 2208 2236 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 30 PID 2236 wrote to memory of 2208 2236 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 30 PID 2236 wrote to memory of 2208 2236 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 30 PID 2236 wrote to memory of 2208 2236 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 30 PID 2236 wrote to memory of 2208 2236 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 30 PID 2236 wrote to memory of 2208 2236 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 30 PID 2236 wrote to memory of 2208 2236 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 30 PID 2236 wrote to memory of 2208 2236 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 30 PID 2236 wrote to memory of 2208 2236 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 30 PID 2236 wrote to memory of 2208 2236 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 30 PID 2236 wrote to memory of 2208 2236 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 30 PID 2208 wrote to memory of 2744 2208 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 33 PID 2208 wrote to memory of 2744 2208 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 33 PID 2208 wrote to memory of 2744 2208 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 33 PID 2208 wrote to memory of 2744 2208 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 33 PID 2208 wrote to memory of 2736 2208 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 34 PID 2208 wrote to memory of 2736 2208 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 34 PID 2208 wrote to memory of 2736 2208 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 34 PID 2208 wrote to memory of 2736 2208 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 34 PID 2736 wrote to memory of 2800 2736 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 35 PID 2736 wrote to memory of 2800 2736 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 35 PID 2736 wrote to memory of 2800 2736 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 35 PID 2736 wrote to memory of 2800 2736 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 35 PID 2736 wrote to memory of 2800 2736 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 35 PID 2736 wrote to memory of 2800 2736 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 35 PID 2736 wrote to memory of 2800 2736 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 35 PID 2736 wrote to memory of 2800 2736 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 35 PID 2736 wrote to memory of 2800 2736 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 35 PID 2736 wrote to memory of 2800 2736 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 35 PID 2736 wrote to memory of 2800 2736 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 35 PID 1680 wrote to memory of 3048 1680 taskeng.exe 40 PID 1680 wrote to memory of 3048 1680 taskeng.exe 40 PID 1680 wrote to memory of 3048 1680 taskeng.exe 40 PID 1680 wrote to memory of 3048 1680 taskeng.exe 40 PID 3048 wrote to memory of 1032 3048 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 41 PID 3048 wrote to memory of 1032 3048 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 41 PID 3048 wrote to memory of 1032 3048 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 41 PID 3048 wrote to memory of 1032 3048 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 41 PID 3048 wrote to memory of 1032 3048 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 41 PID 3048 wrote to memory of 1032 3048 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 41 PID 3048 wrote to memory of 1032 3048 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 41 PID 3048 wrote to memory of 1032 3048 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 41 PID 3048 wrote to memory of 1032 3048 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 41 PID 3048 wrote to memory of 1032 3048 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 41 PID 3048 wrote to memory of 1032 3048 b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe 41
Processes
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C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2236 -
C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe"2⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2208 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\c854fe24-77ba-42bf-ad6b-80cce756747d" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:2744
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C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2736 -
C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:2800
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C:\Windows\system32\taskeng.exetaskeng.exe {CA45AAD3-AC53-4206-8CB7-C8B601F834F3} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:1680 -
C:\Users\Admin\AppData\Local\c854fe24-77ba-42bf-ad6b-80cce756747d\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exeC:\Users\Admin\AppData\Local\c854fe24-77ba-42bf-ad6b-80cce756747d\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe --Task2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3048 -
C:\Users\Admin\AppData\Local\c854fe24-77ba-42bf-ad6b-80cce756747d\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exeC:\Users\Admin\AppData\Local\c854fe24-77ba-42bf-ad6b-80cce756747d\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe --Task3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:1032
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD567e486b2f148a3fca863728242b6273e
SHA1452a84c183d7ea5b7c015b597e94af8eef66d44a
SHA256facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb
SHA512d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e
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Filesize
436B
MD5971c514f84bba0785f80aa1c23edfd79
SHA1732acea710a87530c6b08ecdf32a110d254a54c8
SHA256f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895
SHA51243dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Filesize174B
MD531165b50b4da0329a596e0712926f6b9
SHA196bf61dc24277adb3e543a9e5c8db8c37f29c716
SHA256fe814ae9757d2639f13a32892a8e3fa132d4a00a60f0ac73c6ba17e0351bb9d2
SHA51244eecde407a2d8e928dafbdbe659c51388dedd7dd219de3f4d190387874672e414a62244a5b3163818a4e290062c9ca6a2fd295d7c0d3f3cadb5735228c45c72
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize170B
MD5745991e96bdd395a5422ef2ee764d56f
SHA1dbe95bdef7c942b2771e8b58bd82afe9b1c11ff7
SHA2561a57e4bffdfcb260a1cb5bdf20da4b1e626800012055e904e0bd2090221fd0cf
SHA512c9a1eb7e06ad2549d48836598b4f5826596bae2b70b6b4d7791bfc31335ec018ac3ae104328d60118ee2b103279c1b3466e056537b2bc2a069467e8e707c3bd0
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Filesize
70KB
MD549aebf8cbd62d92ac215b2923fb1b9f5
SHA11723be06719828dda65ad804298d0431f6aff976
SHA256b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b
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Filesize
181KB
MD54ea6026cf93ec6338144661bf1202cd1
SHA1a1dec9044f750ad887935a01430bf49322fbdcb7
SHA2568efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
SHA5126c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b
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C:\Users\Admin\AppData\Local\c854fe24-77ba-42bf-ad6b-80cce756747d\b2f294347754b834dfa0798a7f80dc89_JaffaCakes118.exe
Filesize831KB
MD5b2f294347754b834dfa0798a7f80dc89
SHA1a62a785570f2302af02fa981a279afcb371c7d49
SHA256f911d9fe94c6aa35874faa758432168c6846c24b010e8f351f874ac6830c2a2d
SHA5124e5195423198d4ea5f1742e9ded4598153a1a40ae1df65796cd457c75ffdeb433cebf85d6fcc5b527d2d2409487104386ad6073e071e6843d712f05c114a265d