514a0ef6240663664b3a3e06dabdb297841a7e37eaeac65bafbce1efd456a7e1

General

Target

Installer (1).msi
Size

1.4MB
MD5

f3805cdf687890992345aaa4577b86a4
SHA1

697362f0a495bc1fc692f8bc3b12a81522404cc5
SHA256

514a0ef6240663664b3a3e06dabdb297841a7e37eaeac65bafbce1efd456a7e1
SHA512

6ad1f3ccbbb47e6599548946bca269b4313ffac918516e8ba4bd00dfb078c0dd166d7fac1289eaeb6697e75c8fc20ecd48632914c15dbe10c642fd98f40f6142
SSDEEP

24576:jn0CgtRH3nOX1FIhp5DJ4suxNVTK+ucjByw+Z5cYokzJV+H4:T0LUItD0T9KjHJzJl

Score

8^/10

dave

Malware Config

Signatures

Dave packer 1 IoCs

Detects executable using a packer named 'Dave' by the community, based on a string at the end.

dave

Processes:

resource	yara_rule
behavioral1/memory/1592-265-0x0000000002290000-0x0000000002314000-memory.dmp	dave

Loads dropped DLL 1 IoCs

Processes:

MsiExec.exe

pid process

1592 MsiExec.exe
Blocklisted process makes network request 3 IoCs

Processes:

msiexec.exemsiexec.exe

flow pid process

3 3020 msiexec.exe
5 3020 msiexec.exe
6 1032 msiexec.exe

pid	process
1592	MsiExec.exe

flow	pid	process
3	3020	msiexec.exe
5	3020	msiexec.exe
6	1032	msiexec.exe

Enumerates connected drives 3 TTPs 46 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)	\??\J:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\Z:	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)	\??\W:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe

Drops file in Windows directory 9 IoCs

Processes:

msiexec.exeDrvInst.exe

description	ioc	process
File created	C:\Windows\Installer\f767b39.ipi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI8583.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI86AD.tmp	msiexec.exe
File opened for modification	C:\Windows\INF\setupapi.ev3	DrvInst.exe
File opened for modification	C:\Windows\INF\setupapi.dev.log	DrvInst.exe
File created	C:\Windows\Installer\f767b38.msi	msiexec.exe
File opened for modification	C:\Windows\INF\setupapi.ev1	DrvInst.exe
File opened for modification	C:\Windows\Installer\f767b38.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe

Modifies data under HKEY_USERS 43 IoCs

Processes:

DrvInst.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\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\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	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\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\Certificates	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\Policies\Microsoft\SystemCertificates\CA\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\CA\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\TrustedPeople\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\CA\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\Root\CTLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\SmartCardRoot\CRLs	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\My	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\SystemCertificates\trust\Certificates	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	DrvInst.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Policies\Microsoft\SystemCertificates\trust\CTLs	DrvInst.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

msiexec.exe

pid process

1032 msiexec.exe
1032 msiexec.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msiexec.exe

pid process

3020 msiexec.exe

pid	process
1032	msiexec.exe
1032	msiexec.exe

pid	process
3020	msiexec.exe

Suspicious use of AdjustPrivilegeToken 55 IoCs

Processes:

msiexec.exemsiexec.exevssvc.exeDrvInst.exe

description	pid	process
Token: SeShutdownPrivilege	3020	msiexec.exe
Token: SeIncreaseQuotaPrivilege	3020	msiexec.exe
Token: SeRestorePrivilege	1032	msiexec.exe
Token: SeTakeOwnershipPrivilege	1032	msiexec.exe
Token: SeSecurityPrivilege	1032	msiexec.exe
Token: SeCreateTokenPrivilege	3020	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	3020	msiexec.exe
Token: SeLockMemoryPrivilege	3020	msiexec.exe
Token: SeIncreaseQuotaPrivilege	3020	msiexec.exe
Token: SeMachineAccountPrivilege	3020	msiexec.exe
Token: SeTcbPrivilege	3020	msiexec.exe
Token: SeSecurityPrivilege	3020	msiexec.exe
Token: SeTakeOwnershipPrivilege	3020	msiexec.exe
Token: SeLoadDriverPrivilege	3020	msiexec.exe
Token: SeSystemProfilePrivilege	3020	msiexec.exe
Token: SeSystemtimePrivilege	3020	msiexec.exe
Token: SeProfSingleProcessPrivilege	3020	msiexec.exe
Token: SeIncBasePriorityPrivilege	3020	msiexec.exe
Token: SeCreatePagefilePrivilege	3020	msiexec.exe
Token: SeCreatePermanentPrivilege	3020	msiexec.exe
Token: SeBackupPrivilege	3020	msiexec.exe
Token: SeRestorePrivilege	3020	msiexec.exe
Token: SeShutdownPrivilege	3020	msiexec.exe
Token: SeDebugPrivilege	3020	msiexec.exe
Token: SeAuditPrivilege	3020	msiexec.exe
Token: SeSystemEnvironmentPrivilege	3020	msiexec.exe
Token: SeChangeNotifyPrivilege	3020	msiexec.exe
Token: SeRemoteShutdownPrivilege	3020	msiexec.exe
Token: SeUndockPrivilege	3020	msiexec.exe
Token: SeSyncAgentPrivilege	3020	msiexec.exe
Token: SeEnableDelegationPrivilege	3020	msiexec.exe
Token: SeManageVolumePrivilege	3020	msiexec.exe
Token: SeImpersonatePrivilege	3020	msiexec.exe
Token: SeCreateGlobalPrivilege	3020	msiexec.exe
Token: SeBackupPrivilege	1756	vssvc.exe
Token: SeRestorePrivilege	1756	vssvc.exe
Token: SeAuditPrivilege	1756	vssvc.exe
Token: SeBackupPrivilege	1032	msiexec.exe
Token: SeRestorePrivilege	1032	msiexec.exe
Token: SeRestorePrivilege	1324	DrvInst.exe
Token: SeRestorePrivilege	1324	DrvInst.exe
Token: SeRestorePrivilege	1324	DrvInst.exe
Token: SeRestorePrivilege	1324	DrvInst.exe
Token: SeRestorePrivilege	1324	DrvInst.exe
Token: SeRestorePrivilege	1324	DrvInst.exe
Token: SeRestorePrivilege	1324	DrvInst.exe
Token: SeLoadDriverPrivilege	1324	DrvInst.exe
Token: SeLoadDriverPrivilege	1324	DrvInst.exe
Token: SeLoadDriverPrivilege	1324	DrvInst.exe
Token: SeRestorePrivilege	1032	msiexec.exe
Token: SeTakeOwnershipPrivilege	1032	msiexec.exe
Token: SeRestorePrivilege	1032	msiexec.exe
Token: SeTakeOwnershipPrivilege	1032	msiexec.exe
Token: SeRestorePrivilege	1032	msiexec.exe
Token: SeTakeOwnershipPrivilege	1032	msiexec.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

msiexec.exe

pid process

3020 msiexec.exe

pid	process
3020	msiexec.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

msiexec.exe

description	pid	process	target process
PID 1032 wrote to memory of 1592	1032	msiexec.exe	MsiExec.exe
PID 1032 wrote to memory of 1592	1032	msiexec.exe	MsiExec.exe
PID 1032 wrote to memory of 1592	1032	msiexec.exe	MsiExec.exe
PID 1032 wrote to memory of 1592	1032	msiexec.exe	MsiExec.exe
PID 1032 wrote to memory of 1592	1032	msiexec.exe	MsiExec.exe
PID 1032 wrote to memory of 1592	1032	msiexec.exe	MsiExec.exe
PID 1032 wrote to memory of 1592	1032	msiexec.exe	MsiExec.exe

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Windows\system32\msiexec.exe
msiexec.exe /I "C:\Users\Admin\AppData\Local\Temp\Installer (1).msi"
1⤵
- Blocklisted process makes network request
- Enumerates connected drives
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:3020

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Blocklisted process makes network request
- Enumerates connected drives
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1032
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding A703F415CFA48133DCE9A1B1F324BEAC
  2⤵
  - Loads dropped DLL
  PID:1592

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1756

C:\Windows\system32\DrvInst.exe
DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "00000000000003AC" "00000000000005C0"
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:1324

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8555326CC9661C9937DC5053B6C38763

Filesize
1KB

MD5
866912c070f1ecacacc2d5bca55ba129

SHA1
b7ab3308d1ea4477ba1480125a6fbda936490cbb

SHA256
85666a562ee0be5ce925c1d8890a6f76a87ec16d4d7d5f29ea7419cf20123b69

SHA512
f91e855e0346ac8c3379129154e01488bb22cff7f6a6df2a80f1671e43c5df8acae36fdf5ee0eb2320f287a681a326b6f1df36e8e37aa5597c4797dd6b43b7cf

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8555326CC9661C9937DC5053B6C38763

Filesize
326B

MD5
c8f5d69df4a4fae08c6c4e356853ed65

SHA1
9b63db0bc073e1f312c3b6d9c8d74e95d85f07ee

SHA256
129e754199bbeb6c74d73ea99ef9a784ff0b277dbd681a7351664b01ad46ccad

SHA512
7a8eff6c077657f61581ae6f76fd5ffc019857ab49e6bef4aaa311ff9dbb23c31da09a33ebc4c1f6d7a59ff73bdd298ecc391b208148b8e1dcc1c326a4d2f9ff

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
72032e3192439c794186c07c4da745e5

SHA1
cc9e6fee19617605dc864fb81bc8e542345a1a80

SHA256
2febbffcc4e3a409532e2ece5b2c8ba2f75f4801e2ac4aa1a8fabdd62d65b16f

SHA512
b82403c06405aa3c2f2df2101cb83d7255f100c912020778f721582c802c8362ae3f1e3345ff0b4e1ded2e090543d352f85874fd91176d60d2332211dd83f8b4

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab31EB.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar31FE.tmp

Filesize
171KB

MD5
9c0c641c06238516f27941aa1166d427

SHA1
64cd549fb8cf014fcd9312aa7a5b023847b6c977

SHA256
4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

SHA512
936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

Download Submit
C:\Windows\Installer\MSI86AD.tmp

Filesize
1.3MB

MD5
d66c92c71ed19767fe80fd1f3d2d7d5e

SHA1
65c0d18dd1041d897ef92a011726566c45ab4cea

SHA256
091a738da44a18105507cde061674705e8cf9deb09c90b8dc2ed7f03a137f3b4

SHA512
022a6a0847fa6574a27a7d5c3895c17f831243b3dfd7af02d0a59ba3f5364665df621fa89113e121e8c605043996d0a1c837a33fb733e6d91d7af1ac57e7a4e2

Download Submit
memory/1592-262-0x0000000010000000-0x0000000010154000-memory.dmp

Filesize
1.3MB

Download
memory/1592-263-0x0000000002410000-0x0000000002497000-memory.dmp

Filesize
540KB

Download
memory/1592-265-0x0000000002290000-0x0000000002314000-memory.dmp

Filesize
528KB

Download
memory/1592-268-0x0000000002500000-0x0000000002584000-memory.dmp

Filesize
528KB

Download
memory/1592-273-0x0000000010000000-0x0000000010154000-memory.dmp

Filesize
1.3MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads