Analysis
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max time kernel
143s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
21-05-2024 23:24
Static task
static1
Behavioral task
behavioral1
Sample
1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe
Resource
win10v2004-20240508-en
General
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Target
1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe
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Size
806KB
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MD5
f47c11ca7e97297d5bdbb85910a2f9f2
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SHA1
8d5d7e9d38bf7dc9c1510aa656a9468e289a80ba
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SHA256
1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4
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SHA512
5954c8ebc830da9e2f83830ec991d4118de2e5c03287b4e4c7cf536932fc5385cd2ffa963c95c033cf88addcdf77a941b87e234fb7be496ffb5f435d01a026dc
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SSDEEP
12288:qaCXOY0rS3t0QWRQdxyj+pqi3PwzAFrag+5bOm5KiNUJpTZ:9C+YeSvIQdtRPvNagA/FNGt
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
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extension
.vepi
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offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 13 IoCs
Processes:
resource yara_rule behavioral1/memory/2288-2-0x0000000002660000-0x000000000277B000-memory.dmp family_djvu behavioral1/memory/1652-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1652-8-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1652-9-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1652-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2432-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2432-47-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2432-46-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2432-48-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2432-51-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2432-54-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2432-53-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2432-55-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exedescription 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\\5ffdd31e-9f26-45fb-b491-46969f22cc27\\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe\" --AutoStart" 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.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.
Processes:
flow ioc 3 api.2ip.ua 4 api.2ip.ua 9 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exedescription pid process target process PID 2288 set thread context of 1652 2288 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2696 set thread context of 2432 2696 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exepid process 1652 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 2432 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exedescription pid process target process PID 2288 wrote to memory of 1652 2288 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2288 wrote to memory of 1652 2288 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2288 wrote to memory of 1652 2288 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2288 wrote to memory of 1652 2288 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2288 wrote to memory of 1652 2288 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2288 wrote to memory of 1652 2288 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2288 wrote to memory of 1652 2288 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2288 wrote to memory of 1652 2288 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2288 wrote to memory of 1652 2288 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2288 wrote to memory of 1652 2288 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2288 wrote to memory of 1652 2288 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 1652 wrote to memory of 2688 1652 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe icacls.exe PID 1652 wrote to memory of 2688 1652 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe icacls.exe PID 1652 wrote to memory of 2688 1652 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe icacls.exe PID 1652 wrote to memory of 2688 1652 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe icacls.exe PID 1652 wrote to memory of 2696 1652 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 1652 wrote to memory of 2696 1652 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 1652 wrote to memory of 2696 1652 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 1652 wrote to memory of 2696 1652 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2696 wrote to memory of 2432 2696 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2696 wrote to memory of 2432 2696 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2696 wrote to memory of 2432 2696 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2696 wrote to memory of 2432 2696 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2696 wrote to memory of 2432 2696 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2696 wrote to memory of 2432 2696 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2696 wrote to memory of 2432 2696 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2696 wrote to memory of 2432 2696 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2696 wrote to memory of 2432 2696 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2696 wrote to memory of 2432 2696 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe PID 2696 wrote to memory of 2432 2696 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe 1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe"C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2288 -
C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe"C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1652 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\5ffdd31e-9f26-45fb-b491-46969f22cc27" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:2688 -
C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe"C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2696 -
C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe"C:\Users\Admin\AppData\Local\Temp\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2432
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize1KB
MD5a1d955617a4d146e70544d0d9a0390ca
SHA15ffdc4453b23e24a7cb0e634b26864c169f5257b
SHA2568dbff2c0018158256912d87dd495a68c351303a319f50f204a930317e867aeb3
SHA5120bffbc27638b12cc04f335de8c4f3c74df01ae55b56f389f8d046d797b4c62d31bbff057ea75ce32f67cdd3b878fd0aad3eb62e983f814296e1b94de3c6ba810
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize724B
MD58202a1cd02e7d69597995cabbe881a12
SHA18858d9d934b7aa9330ee73de6c476acf19929ff6
SHA25658f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
SHA51297ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize410B
MD5a96abc14511eaf36a2c0de29ce8a2e82
SHA1e5657860622cfd0c6dd08681d431cb8ecb0e5dcd
SHA2566a4281ac15c980190a39f04babc7a826ab8becdd4a0d2c7c023783fb215a6f7f
SHA51201b4fda422bd3b031a66f3797c15834a7307b1cfa67bf1db7fd869067adbac8115b01a0fe7187fc95541821a81a148d471cf70c81321184c4912ebb3ec6e69d5
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize344B
MD557223d15c258c66655d28df3338039a4
SHA107fab2ff9d93657d4b02204ce1c482297efe35cc
SHA256582424510aa118b92fd84bf9ffadfb81a13db55b38772883e78ec685cd51c514
SHA5126a93fcaaae5ecd295ea5e8ae48cb67c5ebf965971b57da1643d1d729c32011acc9a631d14ba42adaa7c4a72c81a8b1de860a803d118f29aa42b7314b5603409a
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5bd1f2402aafb6cddd5e780dc790b041e
SHA164a881ea1fe4f04b8f04ceb3b61c6532fa417244
SHA25633f91893e8745e0bde63d61faac5575d69683956f9abb1d411a544ff52eec30f
SHA51278678165217dd3ce0537a6a76fd0e40578922223f3d09d00a580e5c09e8b128e54e2fe7fc40b47d0e7578fda9f4f87fb3674f5763a07437b8a8b1b7e6dfb0060
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C:\Users\Admin\AppData\Local\5ffdd31e-9f26-45fb-b491-46969f22cc27\1e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4.exe
Filesize806KB
MD5f47c11ca7e97297d5bdbb85910a2f9f2
SHA18d5d7e9d38bf7dc9c1510aa656a9468e289a80ba
SHA2561e9040d11c5155b96e7b35abb77b23968e9d27c513d3e7b2ff6b2824830169d4
SHA5125954c8ebc830da9e2f83830ec991d4118de2e5c03287b4e4c7cf536932fc5385cd2ffa963c95c033cf88addcdf77a941b87e234fb7be496ffb5f435d01a026dc
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Filesize
65KB
MD5ac05d27423a85adc1622c714f2cb6184
SHA1b0fe2b1abddb97837ea0195be70ab2ff14d43198
SHA256c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
SHA5126d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d