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Analysis
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max time kernel
117s -
max time network
157s -
platform
windows11-21h2_x64 -
resource
win11-20240221-en -
resource tags
arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system -
submitted
29/03/2024, 13:12
Static task
static1
Behavioral task
behavioral1
Sample
944704d6eaf814cbeeb67c321251c959ec9bc6e0616aff436d1e17d5574d5353.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
944704d6eaf814cbeeb67c321251c959ec9bc6e0616aff436d1e17d5574d5353.exe
Resource
win11-20240221-en
General
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Target
944704d6eaf814cbeeb67c321251c959ec9bc6e0616aff436d1e17d5574d5353.exe
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Size
203KB
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MD5
eb016da9d7abf324a337572e29acabe3
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SHA1
d663cb7bb5db5304ff879c455a126936974cd9e3
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SHA256
944704d6eaf814cbeeb67c321251c959ec9bc6e0616aff436d1e17d5574d5353
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SHA512
14db0ef09d49ad3894a4af30134c5c1f6dbe102c56d0890a842c15775302ec4b10a9a07fb507d4e199adc7433c849489325e363f6baf38acb8f4a734d6154054
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SSDEEP
6144:LAZQlW4KTuGQo6H5DKN8zfygUvGlcEkLqiB3:kWlW4KaG7N8zfqvOeh
Malware Config
Extracted
smokeloader
pub1
Extracted
smokeloader
2022
http://trad-einmyus.com/index.php
http://tradein-myus.com/index.php
http://trade-inmyus.com/index.php
Extracted
djvu
http://sajdfue.com/test1/get.php
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extension
.vook
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offline_id
1eSPzWRaNslCgtjBZfL5pzvovoiaVI4IZSnvAwt1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://sajdfue.com/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 9 IoCs
resource yara_rule behavioral2/memory/4468-22-0x00000000023B0000-0x00000000024CB000-memory.dmp family_djvu behavioral2/memory/1204-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1204-25-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1204-26-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1204-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1204-39-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4944-45-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4944-46-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4944-48-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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SmokeLoader
Modular backdoor trojan in use since 2014.
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Downloads MZ/PE file
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Deletes itself 1 IoCs
pid Process 3192 Process not Found -
Executes dropped EXE 7 IoCs
pid Process 4468 1559.exe 1204 1559.exe 4376 1559.exe 4944 1559.exe 2472 B582.exe 4872 2D34.exe 1600 5B6A.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 2188 icacls.exe -
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3084248216-1643706459-906455512-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\58b37a54-76b5-45c9-8167-7eb1b6673cd3\\1559.exe\" --AutoStart" 1559.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs
flow ioc 20 raw.githubusercontent.com 20 drive.google.com 62 raw.githubusercontent.com 66 drive.google.com -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 1 api.2ip.ua 16 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4468 set thread context of 1204 4468 1559.exe 84 PID 4376 set thread context of 4944 4376 1559.exe 89 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
pid pid_target Process procid_target 3148 4944 WerFault.exe 89 -
Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 944704d6eaf814cbeeb67c321251c959ec9bc6e0616aff436d1e17d5574d5353.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 944704d6eaf814cbeeb67c321251c959ec9bc6e0616aff436d1e17d5574d5353.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI 944704d6eaf814cbeeb67c321251c959ec9bc6e0616aff436d1e17d5574d5353.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3104 944704d6eaf814cbeeb67c321251c959ec9bc6e0616aff436d1e17d5574d5353.exe 3104 944704d6eaf814cbeeb67c321251c959ec9bc6e0616aff436d1e17d5574d5353.exe 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found 3192 Process not Found -
Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 3104 944704d6eaf814cbeeb67c321251c959ec9bc6e0616aff436d1e17d5574d5353.exe -
Suspicious use of AdjustPrivilegeToken 9 IoCs
description pid Process Token: SeShutdownPrivilege 3192 Process not Found Token: SeCreatePagefilePrivilege 3192 Process not Found Token: SeShutdownPrivilege 3192 Process not Found Token: SeCreatePagefilePrivilege 3192 Process not Found Token: SeShutdownPrivilege 3192 Process not Found Token: SeCreatePagefilePrivilege 3192 Process not Found Token: SeShutdownPrivilege 3192 Process not Found Token: SeCreatePagefilePrivilege 3192 Process not Found Token: SeDebugPrivilege 4872 2D34.exe -
Suspicious use of UnmapMainImage 1 IoCs
pid Process 3192 Process not Found -
Suspicious use of WriteProcessMemory 45 IoCs
description pid Process procid_target PID 3192 wrote to memory of 5040 3192 Process not Found 80 PID 3192 wrote to memory of 5040 3192 Process not Found 80 PID 5040 wrote to memory of 4964 5040 cmd.exe 82 PID 5040 wrote to memory of 4964 5040 cmd.exe 82 PID 3192 wrote to memory of 4468 3192 Process not Found 83 PID 3192 wrote to memory of 4468 3192 Process not Found 83 PID 3192 wrote to memory of 4468 3192 Process not Found 83 PID 4468 wrote to memory of 1204 4468 1559.exe 84 PID 4468 wrote to memory of 1204 4468 1559.exe 84 PID 4468 wrote to memory of 1204 4468 1559.exe 84 PID 4468 wrote to memory of 1204 4468 1559.exe 84 PID 4468 wrote to memory of 1204 4468 1559.exe 84 PID 4468 wrote to memory of 1204 4468 1559.exe 84 PID 4468 wrote to memory of 1204 4468 1559.exe 84 PID 4468 wrote to memory of 1204 4468 1559.exe 84 PID 4468 wrote to memory of 1204 4468 1559.exe 84 PID 4468 wrote to memory of 1204 4468 1559.exe 84 PID 1204 wrote to memory of 2188 1204 1559.exe 85 PID 1204 wrote to memory of 2188 1204 1559.exe 85 PID 1204 wrote to memory of 2188 1204 1559.exe 85 PID 1204 wrote to memory of 4376 1204 1559.exe 86 PID 1204 wrote to memory of 4376 1204 1559.exe 86 PID 1204 wrote to memory of 4376 1204 1559.exe 86 PID 4376 wrote to memory of 4944 4376 1559.exe 89 PID 4376 wrote to memory of 4944 4376 1559.exe 89 PID 4376 wrote to memory of 4944 4376 1559.exe 89 PID 4376 wrote to memory of 4944 4376 1559.exe 89 PID 4376 wrote to memory of 4944 4376 1559.exe 89 PID 4376 wrote to memory of 4944 4376 1559.exe 89 PID 4376 wrote to memory of 4944 4376 1559.exe 89 PID 4376 wrote to memory of 4944 4376 1559.exe 89 PID 4376 wrote to memory of 4944 4376 1559.exe 89 PID 4376 wrote to memory of 4944 4376 1559.exe 89 PID 3192 wrote to memory of 2472 3192 Process not Found 93 PID 3192 wrote to memory of 2472 3192 Process not Found 93 PID 3192 wrote to memory of 2472 3192 Process not Found 93 PID 3192 wrote to memory of 2036 3192 Process not Found 94 PID 3192 wrote to memory of 2036 3192 Process not Found 94 PID 2036 wrote to memory of 3260 2036 cmd.exe 96 PID 2036 wrote to memory of 3260 2036 cmd.exe 96 PID 3192 wrote to memory of 4872 3192 Process not Found 97 PID 3192 wrote to memory of 4872 3192 Process not Found 97 PID 3192 wrote to memory of 1600 3192 Process not Found 98 PID 3192 wrote to memory of 1600 3192 Process not Found 98 PID 3192 wrote to memory of 1600 3192 Process not Found 98
Processes
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C:\Users\Admin\AppData\Local\Temp\944704d6eaf814cbeeb67c321251c959ec9bc6e0616aff436d1e17d5574d5353.exe"C:\Users\Admin\AppData\Local\Temp\944704d6eaf814cbeeb67c321251c959ec9bc6e0616aff436d1e17d5574d5353.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:3104
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\F3B6.bat" "1⤵
- Suspicious use of WriteProcessMemory
PID:5040 -
C:\Windows\system32\reg.exereg add "HKEY_CURRENT_USER\Software\clicker\key" /v primary /t REG_DWORD /d 12⤵PID:4964
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C:\Users\Admin\AppData\Local\Temp\1559.exeC:\Users\Admin\AppData\Local\Temp\1559.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4468 -
C:\Users\Admin\AppData\Local\Temp\1559.exeC:\Users\Admin\AppData\Local\Temp\1559.exe2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1204 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\58b37a54-76b5-45c9-8167-7eb1b6673cd3" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:2188
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C:\Users\Admin\AppData\Local\Temp\1559.exe"C:\Users\Admin\AppData\Local\Temp\1559.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4376 -
C:\Users\Admin\AppData\Local\Temp\1559.exe"C:\Users\Admin\AppData\Local\Temp\1559.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
PID:4944 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4944 -s 6005⤵
- Program crash
PID:3148
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4944 -ip 49441⤵PID:3088
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C:\Users\Admin\AppData\Local\Temp\B582.exeC:\Users\Admin\AppData\Local\Temp\B582.exe1⤵
- Executes dropped EXE
PID:2472
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\C264.bat" "1⤵
- Suspicious use of WriteProcessMemory
PID:2036 -
C:\Windows\system32\reg.exereg add "HKEY_CURRENT_USER\Software\clicker\key" /v primary /t REG_DWORD /d 12⤵PID:3260
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C:\Users\Admin\AppData\Local\Temp\2D34.exeC:\Users\Admin\AppData\Local\Temp\2D34.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4872 -
C:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exeC:\Windows\BitLockerDiscoveryVolumeContents\BitLockerToGo.exe2⤵PID:2408
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C:\Users\Admin\AppData\Local\Temp\5B6A.exeC:\Users\Admin\AppData\Local\Temp\5B6A.exe1⤵
- Executes dropped EXE
PID:1600 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵PID:2844
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C:\Windows\explorer.exeexplorer.exe1⤵PID:3756
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C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca1⤵PID:1520
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C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca1⤵PID:1608
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C:\Windows\system32\werfault.exewerfault.exe /hc /shared Global\b8f8ed8de3814d3c9378bfb7d359304d /t 1864 /p 16081⤵PID:1548
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
732KB
MD5749217bd5f268d2f54c5d02d627fe10e
SHA1e81514968944cfbed9d6423511110b7b0c512427
SHA2560b1256495e7d8847609ec5e99abe92c92a0126e7d54fbd1e862649f27699a5cc
SHA512eb9df2906b2be66d9b0076d7aff44900dff0b76cf0fddc8b6da08084d53b05aacf2e09664a085a0f8358889a2f667811445b9fc10f0075ae1fdf879b97366388
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Filesize
30.6MB
MD5ff35671d54d612772b0c22c141a3056e
SHA1d005a27cd48556bf17eb9c2b43af49b67347cc0e
SHA2562f625ea35f82332c639049c4a849f39cd2b74acb013880d156a2f647497c2512
SHA5129a40a657f196036ef07c410db225f7a023f7299abc078cefd5d97489e7359ce9c640d72b98fedbf3f11ebaba1987b0acd5c7892b1ba5b5ae18709037df45790e
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Filesize
4.1MB
MD5f3023cf0027501c0057cc293d3c792ef
SHA1fce12239da0220dde68c849b94d8c670af1b5e77
SHA2567a61ec57a9de30633d3d8d8ce8708cc5c68179c2d42dd49dff3412914b9e52d5
SHA5126dfb815413d92745c6845046be2f0ac6325d7ab7510e757916d9c116b144634785ee82d5fc07af7f46310d3bd5b09b8bc9c79aca9d0c0b09fd09f112099fba07
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Filesize
6.5MB
MD59e52aa572f0afc888c098db4c0f687ff
SHA1ef7c2bb222e69ad0e10c8686eb03dcbee7933c2b
SHA2564a40f9d491f09521f4b0c6076a0eb488f6d8e1cf4b67aa6569c2ccce13556443
SHA512d0991e682ae8c954721e905753b56c01f91b85313beb9996331793c3efa8acc13d574ef5ba44853ecc3e05822931ed655bad1924fa11b774a43e015f42185f62
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Filesize
77B
MD555cc761bf3429324e5a0095cab002113
SHA12cc1ef4542a4e92d4158ab3978425d517fafd16d
SHA256d6cceb3c71b80403364bf142f2fa4624ee0be36a49bac25ed45a497cf1ce9c3a
SHA51233f9f5cad22d291077787c7df510806e4ac31f453d288712595af6debe579fabed6cdf4662e46e6fa94de135b161e739f55cfae05c36c87af85ed6a6ad1c9155
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82