Analysis
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max time kernel
144s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system -
submitted
09-10-2023 22:51
Static task
static1
Behavioral task
behavioral1
Sample
doc_06.20.msi
Resource
win7-20230831-en
windows7-x64
11 signatures
150 seconds
General
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Target
doc_06.20.msi
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Size
2.2MB
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MD5
41f1f58087ac8ca8009d07032bf4319f
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SHA1
8ab6be5ac1e70f9cf1a970e4a7b2c53f29dac067
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SHA256
38c37a12323334e8362d19f6788755fc5ba35f51b9f53a07ef5481f906807864
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SHA512
0c60361265f062afeab7f03e648da982050fa58b86bdf90d972b2a936a5c316cb45c6d696a106f18797e2d9810ace6ca12a13703be4cbaf618c50f3e4d4ba359
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SSDEEP
49152:QHVNAxnHKwlpMBHOZ7wZAf8dwjeZvpA+ZSqfShYNUeCMziwF:Q12xHKwlpOH00dw0pFsbJZA
Malware Config
Extracted
Family
bumblebee
Botnet
msi11606
C2
176.111.174.67:443
rc4.plain
Signatures
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Loads dropped DLL 1 IoCs
pid Process 2692 regsvr32.exe -
Enumerates connected drives 3 TTPs 46 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\E: msiexec.exe File opened (read-only) \??\G: msiexec.exe File opened (read-only) \??\P: msiexec.exe File opened (read-only) \??\U: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\J: msiexec.exe File opened (read-only) \??\N: msiexec.exe File opened (read-only) \??\Y: msiexec.exe File opened (read-only) \??\Z: msiexec.exe File opened (read-only) \??\I: msiexec.exe File opened (read-only) \??\J: msiexec.exe File opened (read-only) \??\O: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\S: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\U: msiexec.exe File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\G: msiexec.exe File opened (read-only) \??\L: msiexec.exe File opened (read-only) \??\Z: msiexec.exe File opened (read-only) \??\S: msiexec.exe File opened (read-only) \??\V: msiexec.exe File opened (read-only) \??\Y: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\M: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\O: msiexec.exe File opened (read-only) \??\Q: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\L: msiexec.exe File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\P: msiexec.exe File opened (read-only) \??\N: msiexec.exe File opened (read-only) \??\M: msiexec.exe File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\V: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\E: msiexec.exe File opened (read-only) \??\I: msiexec.exe File opened (read-only) \??\Q: msiexec.exe -
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
pid Process 2692 regsvr32.exe -
Drops file in Windows directory 10 IoCs
description ioc Process File opened for modification C:\Windows\INF\setupapi.ev3 DrvInst.exe File opened for modification C:\Windows\INF\setupapi.ev1 DrvInst.exe File opened for modification C:\Windows\INF\setupapi.dev.log DrvInst.exe File opened for modification C:\Windows\Installer\f772c10.msi msiexec.exe File opened for modification C:\Windows\Installer\f772c11.ipi msiexec.exe File created C:\Windows\Installer\f772c10.msi msiexec.exe File created C:\Windows\Installer\f772c11.ipi msiexec.exe File opened for modification C:\Windows\Installer\ msiexec.exe File opened for modification C:\Windows\Installer\MSI2DF3.tmp msiexec.exe File created C:\Windows\Installer\f772c13.msi msiexec.exe -
Modifies data under HKEY_USERS 43 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs DrvInst.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2D\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000 DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\My DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs DrvInst.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs DrvInst.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2544 msiexec.exe 2544 msiexec.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeShutdownPrivilege 2044 msiexec.exe Token: SeIncreaseQuotaPrivilege 2044 msiexec.exe Token: SeRestorePrivilege 2544 msiexec.exe Token: SeTakeOwnershipPrivilege 2544 msiexec.exe Token: SeSecurityPrivilege 2544 msiexec.exe Token: SeCreateTokenPrivilege 2044 msiexec.exe Token: SeAssignPrimaryTokenPrivilege 2044 msiexec.exe Token: SeLockMemoryPrivilege 2044 msiexec.exe Token: SeIncreaseQuotaPrivilege 2044 msiexec.exe Token: SeMachineAccountPrivilege 2044 msiexec.exe Token: SeTcbPrivilege 2044 msiexec.exe Token: SeSecurityPrivilege 2044 msiexec.exe Token: SeTakeOwnershipPrivilege 2044 msiexec.exe Token: SeLoadDriverPrivilege 2044 msiexec.exe Token: SeSystemProfilePrivilege 2044 msiexec.exe Token: SeSystemtimePrivilege 2044 msiexec.exe Token: SeProfSingleProcessPrivilege 2044 msiexec.exe Token: SeIncBasePriorityPrivilege 2044 msiexec.exe Token: SeCreatePagefilePrivilege 2044 msiexec.exe Token: SeCreatePermanentPrivilege 2044 msiexec.exe Token: SeBackupPrivilege 2044 msiexec.exe Token: SeRestorePrivilege 2044 msiexec.exe Token: SeShutdownPrivilege 2044 msiexec.exe Token: SeDebugPrivilege 2044 msiexec.exe Token: SeAuditPrivilege 2044 msiexec.exe Token: SeSystemEnvironmentPrivilege 2044 msiexec.exe Token: SeChangeNotifyPrivilege 2044 msiexec.exe Token: SeRemoteShutdownPrivilege 2044 msiexec.exe Token: SeUndockPrivilege 2044 msiexec.exe Token: SeSyncAgentPrivilege 2044 msiexec.exe Token: SeEnableDelegationPrivilege 2044 msiexec.exe Token: SeManageVolumePrivilege 2044 msiexec.exe Token: SeImpersonatePrivilege 2044 msiexec.exe Token: SeCreateGlobalPrivilege 2044 msiexec.exe Token: SeBackupPrivilege 2760 vssvc.exe Token: SeRestorePrivilege 2760 vssvc.exe Token: SeAuditPrivilege 2760 vssvc.exe Token: SeBackupPrivilege 2544 msiexec.exe Token: SeRestorePrivilege 2544 msiexec.exe Token: SeRestorePrivilege 660 DrvInst.exe Token: SeRestorePrivilege 660 DrvInst.exe Token: SeRestorePrivilege 660 DrvInst.exe Token: SeRestorePrivilege 660 DrvInst.exe Token: SeRestorePrivilege 660 DrvInst.exe Token: SeRestorePrivilege 660 DrvInst.exe Token: SeRestorePrivilege 660 DrvInst.exe Token: SeLoadDriverPrivilege 660 DrvInst.exe Token: SeLoadDriverPrivilege 660 DrvInst.exe Token: SeLoadDriverPrivilege 660 DrvInst.exe Token: SeRestorePrivilege 2544 msiexec.exe Token: SeTakeOwnershipPrivilege 2544 msiexec.exe Token: SeRestorePrivilege 2544 msiexec.exe Token: SeTakeOwnershipPrivilege 2544 msiexec.exe Token: SeRestorePrivilege 2544 msiexec.exe Token: SeTakeOwnershipPrivilege 2544 msiexec.exe Token: SeRestorePrivilege 2544 msiexec.exe Token: SeTakeOwnershipPrivilege 2544 msiexec.exe Token: SeRestorePrivilege 2544 msiexec.exe Token: SeTakeOwnershipPrivilege 2544 msiexec.exe Token: SeRestorePrivilege 2544 msiexec.exe Token: SeTakeOwnershipPrivilege 2544 msiexec.exe Token: SeRestorePrivilege 2544 msiexec.exe Token: SeTakeOwnershipPrivilege 2544 msiexec.exe Token: SeRestorePrivilege 2544 msiexec.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 2044 msiexec.exe 2044 msiexec.exe -
Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 2544 wrote to memory of 2692 2544 msiexec.exe 34 PID 2544 wrote to memory of 2692 2544 msiexec.exe 34 PID 2544 wrote to memory of 2692 2544 msiexec.exe 34 PID 2544 wrote to memory of 2692 2544 msiexec.exe 34 PID 2544 wrote to memory of 2692 2544 msiexec.exe 34 -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Windows\system32\msiexec.exemsiexec.exe /I C:\Users\Admin\AppData\Local\Temp\doc_06.20.msi1⤵
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:2044
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C:\Windows\system32\msiexec.exeC:\Windows\system32\msiexec.exe /V1⤵
- Enumerates connected drives
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2544 -
C:\Windows\system32\regsvr32.exeregsvr32 "C:\Users\Admin\AppData\Local\Temp\Package Installation Dir\e1.dll"2⤵
- Loads dropped DLL
- Suspicious use of NtCreateThreadExHideFromDebugger
PID:2692
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2760
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C:\Windows\system32\DrvInst.exeDrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000004A0" "00000000000004E0"1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:660
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
7KB
MD5eb9837639aabe555480e72f5bf33f7bc
SHA15db007f0a0ebdbe77c5b36650df29d50d7489566
SHA2560f3843e565294fa6710677a2ffd4dada38a237e126974c7ebd8c7052fea0b15c
SHA512936b782e557806ea71af17439f4e6e902609f400eaa9d7d2eecb1421bacaca7dac75b82de596f6d7c99a418626462e13f62da536530d37042fa7fdc9eeb6afb9
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Filesize
2.5MB
MD504889da884690bd296877a6a2453a715
SHA1235a8e9a16a4e963fb2c453cbb469ea3e1590da3
SHA256d1270e29d9a235bb456db76f5c88042eb06964145dd2b31f2ef87d5af1254e57
SHA51274875267c6b96ef6c44ac19021f96213cd115061f881b22d849ebc98aa21c92af64f46c86b908b2da53d3f6fe8d9e7bd291ce11882cff0d11bf1294a39c58cc2
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Filesize
2.2MB
MD541f1f58087ac8ca8009d07032bf4319f
SHA18ab6be5ac1e70f9cf1a970e4a7b2c53f29dac067
SHA25638c37a12323334e8362d19f6788755fc5ba35f51b9f53a07ef5481f906807864
SHA5120c60361265f062afeab7f03e648da982050fa58b86bdf90d972b2a936a5c316cb45c6d696a106f18797e2d9810ace6ca12a13703be4cbaf618c50f3e4d4ba359
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Filesize
2.5MB
MD504889da884690bd296877a6a2453a715
SHA1235a8e9a16a4e963fb2c453cbb469ea3e1590da3
SHA256d1270e29d9a235bb456db76f5c88042eb06964145dd2b31f2ef87d5af1254e57
SHA51274875267c6b96ef6c44ac19021f96213cd115061f881b22d849ebc98aa21c92af64f46c86b908b2da53d3f6fe8d9e7bd291ce11882cff0d11bf1294a39c58cc2