10cba83ef3cbfdc6636647c9fe1c273ffd7e833cd88b93f9c9666e8449764a36

General

Target

krisp-v1.21.1-x64.msi
Size

70.1MB
MD5

e2d02c2d0d744411a0a6e2935dea4f84
SHA1

fba0fcd0cff2c4ceda85c87ef2458558c8754401
SHA256

10cba83ef3cbfdc6636647c9fe1c273ffd7e833cd88b93f9c9666e8449764a36
SHA512

99681131e3cebee6416c4e08cbf766f36d8560a2c47eb160d4bdb6394bd038da9f58a2546f866d4a61c42423e08922e6ef1b432981f0f1d3f2d6931b9b926ae9
SSDEEP

1572864:5bT5TAvyIckmyh4kzaYBqYeTPpCQiyjTtSEOWfd9rdnYjNxYfw8A:5bTtCaEaYBaPiCrOAFYjrYfw

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 3 IoCs

Processes:

msiexec.exe

flow pid process

2 1444 msiexec.exe
4 1444 msiexec.exe
6 1444 msiexec.exe
Loads dropped DLL 4 IoCs

Processes:

MsiExec.exerundll32.exe

pid process

1704 MsiExec.exe
1684 rundll32.exe
1684 rundll32.exe
1684 rundll32.exe

flow	pid	process
2	1444	msiexec.exe
4	1444	msiexec.exe
6	1444	msiexec.exe

pid	process
1704	MsiExec.exe
1684	rundll32.exe
1684	rundll32.exe
1684	rundll32.exe

Enumerates connected drives 3 TTPs 48 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

msiexec.exemsiexec.exe

description	ioc	process
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\F:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\F:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

msiexec.exemsiexec.exe

description	pid	process
Token: SeShutdownPrivilege	1444	msiexec.exe
Token: SeIncreaseQuotaPrivilege	1444	msiexec.exe
Token: SeRestorePrivilege	708	msiexec.exe
Token: SeTakeOwnershipPrivilege	708	msiexec.exe
Token: SeSecurityPrivilege	708	msiexec.exe
Token: SeCreateTokenPrivilege	1444	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	1444	msiexec.exe
Token: SeLockMemoryPrivilege	1444	msiexec.exe
Token: SeIncreaseQuotaPrivilege	1444	msiexec.exe
Token: SeMachineAccountPrivilege	1444	msiexec.exe
Token: SeTcbPrivilege	1444	msiexec.exe
Token: SeSecurityPrivilege	1444	msiexec.exe
Token: SeTakeOwnershipPrivilege	1444	msiexec.exe
Token: SeLoadDriverPrivilege	1444	msiexec.exe
Token: SeSystemProfilePrivilege	1444	msiexec.exe
Token: SeSystemtimePrivilege	1444	msiexec.exe
Token: SeProfSingleProcessPrivilege	1444	msiexec.exe
Token: SeIncBasePriorityPrivilege	1444	msiexec.exe
Token: SeCreatePagefilePrivilege	1444	msiexec.exe
Token: SeCreatePermanentPrivilege	1444	msiexec.exe
Token: SeBackupPrivilege	1444	msiexec.exe
Token: SeRestorePrivilege	1444	msiexec.exe
Token: SeShutdownPrivilege	1444	msiexec.exe
Token: SeDebugPrivilege	1444	msiexec.exe
Token: SeAuditPrivilege	1444	msiexec.exe
Token: SeSystemEnvironmentPrivilege	1444	msiexec.exe
Token: SeChangeNotifyPrivilege	1444	msiexec.exe
Token: SeRemoteShutdownPrivilege	1444	msiexec.exe
Token: SeUndockPrivilege	1444	msiexec.exe
Token: SeSyncAgentPrivilege	1444	msiexec.exe
Token: SeEnableDelegationPrivilege	1444	msiexec.exe
Token: SeManageVolumePrivilege	1444	msiexec.exe
Token: SeImpersonatePrivilege	1444	msiexec.exe
Token: SeCreateGlobalPrivilege	1444	msiexec.exe
Token: SeCreateTokenPrivilege	1444	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	1444	msiexec.exe
Token: SeLockMemoryPrivilege	1444	msiexec.exe
Token: SeIncreaseQuotaPrivilege	1444	msiexec.exe
Token: SeMachineAccountPrivilege	1444	msiexec.exe
Token: SeTcbPrivilege	1444	msiexec.exe
Token: SeSecurityPrivilege	1444	msiexec.exe
Token: SeTakeOwnershipPrivilege	1444	msiexec.exe
Token: SeLoadDriverPrivilege	1444	msiexec.exe
Token: SeSystemProfilePrivilege	1444	msiexec.exe
Token: SeSystemtimePrivilege	1444	msiexec.exe
Token: SeProfSingleProcessPrivilege	1444	msiexec.exe
Token: SeIncBasePriorityPrivilege	1444	msiexec.exe
Token: SeCreatePagefilePrivilege	1444	msiexec.exe
Token: SeCreatePermanentPrivilege	1444	msiexec.exe
Token: SeBackupPrivilege	1444	msiexec.exe
Token: SeRestorePrivilege	1444	msiexec.exe
Token: SeShutdownPrivilege	1444	msiexec.exe
Token: SeDebugPrivilege	1444	msiexec.exe
Token: SeAuditPrivilege	1444	msiexec.exe
Token: SeSystemEnvironmentPrivilege	1444	msiexec.exe
Token: SeChangeNotifyPrivilege	1444	msiexec.exe
Token: SeRemoteShutdownPrivilege	1444	msiexec.exe
Token: SeUndockPrivilege	1444	msiexec.exe
Token: SeSyncAgentPrivilege	1444	msiexec.exe
Token: SeEnableDelegationPrivilege	1444	msiexec.exe
Token: SeManageVolumePrivilege	1444	msiexec.exe
Token: SeImpersonatePrivilege	1444	msiexec.exe
Token: SeCreateGlobalPrivilege	1444	msiexec.exe
Token: SeCreateTokenPrivilege	1444	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

msiexec.exe

pid process

1444 msiexec.exe
1444 msiexec.exe

pid	process
1444	msiexec.exe
1444	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

msiexec.exeMsiExec.exe

description	pid	process	target process
PID 708 wrote to memory of 1704	708	msiexec.exe	MsiExec.exe
PID 708 wrote to memory of 1704	708	msiexec.exe	MsiExec.exe
PID 708 wrote to memory of 1704	708	msiexec.exe	MsiExec.exe
PID 708 wrote to memory of 1704	708	msiexec.exe	MsiExec.exe
PID 708 wrote to memory of 1704	708	msiexec.exe	MsiExec.exe
PID 1704 wrote to memory of 1684	1704	MsiExec.exe	rundll32.exe
PID 1704 wrote to memory of 1684	1704	MsiExec.exe	rundll32.exe
PID 1704 wrote to memory of 1684	1704	MsiExec.exe	rundll32.exe

C:\Windows\system32\msiexec.exe
msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\krisp-v1.21.1-x64.msi
1⤵
- Blocklisted process makes network request
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:1444

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:708

C:\Windows\system32\MsiExec.exe
C:\Windows\system32\MsiExec.exe -Embedding 53FC033C71DBA4A0C2AAB6524E5E310E C
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1704

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4C28.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_7097671 1 InstallerHelper!InstallerHelper.CustomActions.GetOSVersion
3⤵
- Loads dropped DLL
PID:1684

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
Filesize
61KB

MD5
e71c8443ae0bc2e282c73faead0a6dd3

SHA1
0c110c1b01e68edfacaeae64781a37b1995fa94b

SHA256
95b0a5acc5bf70d3abdfd091d0c9f9063aa4fde65bd34dbf16786082e1992e72

SHA512
b38458c7fa2825afb72794f374827403d5946b1132e136a0ce075dfd351277cf7d957c88dc8a1e4adc3bcae1fa8010dae3831e268e910d517691de24326391a6

Download Submit
C:\Users\Admin\AppData\Local\Temp\MSI4C28.tmp
Filesize
617KB

MD5
6985489e7d7d224e6d2cabc8c9cf71c0

SHA1
bcfc8b2eba0402f0d0913c362d192096aae71483

SHA256
a57a419a99d84fef10af39fc841c00dc24a8b625f0874c62132407f47425ee38

SHA512
ea5cc073582057b15cffe673bc70ca6227991843cc6f6ca0a09a1263d76dddac00ff8372beb30c3d844fbc03e63e3274b08a9efd9a6cb4cc808622e96d55e41c

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar49C5.tmp
Filesize
161KB

MD5
be2bec6e8c5653136d3e72fe53c98aa3

SHA1
a8182d6db17c14671c3d5766c72e58d87c0810de

SHA256
1919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd

SHA512
0d1424ccdf0d53faf3f4e13d534e12f22388648aa4c23edbc503801e3c96b7f73c7999b760b5bef4b5e9dd923dffe21a21889b1ce836dd428420bf0f4f5327ff

Download Submit
\Users\Admin\AppData\Local\Temp\MSI4C28.tmp
Filesize
617KB

MD5
6985489e7d7d224e6d2cabc8c9cf71c0

SHA1
bcfc8b2eba0402f0d0913c362d192096aae71483

SHA256
a57a419a99d84fef10af39fc841c00dc24a8b625f0874c62132407f47425ee38

SHA512
ea5cc073582057b15cffe673bc70ca6227991843cc6f6ca0a09a1263d76dddac00ff8372beb30c3d844fbc03e63e3274b08a9efd9a6cb4cc808622e96d55e41c

Download Submit
\Users\Admin\AppData\Local\Temp\MSI4C28.tmp
Filesize
617KB

MD5
6985489e7d7d224e6d2cabc8c9cf71c0

SHA1
bcfc8b2eba0402f0d0913c362d192096aae71483

SHA256
a57a419a99d84fef10af39fc841c00dc24a8b625f0874c62132407f47425ee38

SHA512
ea5cc073582057b15cffe673bc70ca6227991843cc6f6ca0a09a1263d76dddac00ff8372beb30c3d844fbc03e63e3274b08a9efd9a6cb4cc808622e96d55e41c

Download Submit
\Users\Admin\AppData\Local\Temp\MSI4C28.tmp-\InstallerHelper.dll
Filesize
177KB

MD5
bab22511f48c61e6221044455297d7a6

SHA1
d57fe2e104c4b269b85880449e9217bde8a47b23

SHA256
7369e0afeceb6d3c90f8d949d8d85ebb50668f3b093804a4516f533b60fda2fa

SHA512
4d3f3926c278adf0cc95bb38603f0508c0872f340e9d7857d2250d83517a182a017a0bde03faf4465645343a970f973504f0e1e10102b25b1fa98282655e3dde

Download Submit
\Users\Admin\AppData\Local\Temp\MSI4C28.tmp-\InstallerHelper.dll
Filesize
177KB

MD5
bab22511f48c61e6221044455297d7a6

SHA1
d57fe2e104c4b269b85880449e9217bde8a47b23

SHA256
7369e0afeceb6d3c90f8d949d8d85ebb50668f3b093804a4516f533b60fda2fa

SHA512
4d3f3926c278adf0cc95bb38603f0508c0872f340e9d7857d2250d83517a182a017a0bde03faf4465645343a970f973504f0e1e10102b25b1fa98282655e3dde

Download Submit
memory/1684-125-0x0000000001BE0000-0x0000000001C0E000-memory.dmp

Filesize
184KB

Download
memory/1684-129-0x0000000001C10000-0x0000000001C40000-memory.dmp

Filesize
192KB

Download
memory/1684-138-0x000000001AA80000-0x000000001AB00000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads