ssload | dcae57ec4b69236146f744c143c42cc8bdac9da6e991904e6dbf67ec1179286a

General

Target

avp.msi
Size

1.4MB
MD5

4d81be09c23e02fab7364e508c21c111
SHA1

52cae521d7a808c8206f4b5afd6b037bc573b50e
SHA256

dcae57ec4b69236146f744c143c42cc8bdac9da6e991904e6dbf67ec1179286a
SHA512

4f5b4fdeb9a056025455ede8ee6e1757da8db64f9692df2a46558a3c04aaec551734b4d75803bbd579e1163b9aba5005f71c5efb22ee3d336779804a11b2b5a5
SSDEEP

24576:BqKxnNTYUx0ECIgYmfLVYeBZr7A9zdfoAX+8UhxcS:Bq6TYCZKumZr7ARdAAO8oxz

Score

10^/10

ssload loader

Malware Config

Signatures

SSLoad
SSLoad Unpacked DLL payload.
loader ssload

Detects SSLoad Unpacked payload 1 IoCs

loader

Processes:

resource	yara_rule
behavioral2/memory/3048-46-0x0000000003190000-0x0000000003203000-memory.dmp	family_ssload

Blocklisted process makes network request 2 IoCs

Processes:

MsiExec.exe

flow pid process

37 3048 MsiExec.exe
39 3048 MsiExec.exe

flow	pid	process
37	3048	MsiExec.exe
39	3048	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)	\??\E:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\T:	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)	\??\W:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

36 api.ipify.org
37 api.ipify.org

flow	ioc
36	api.ipify.org
37	api.ipify.org

Drops file in Windows directory 9 IoCs

Processes:

msiexec.exe

description	ioc	process
File opened for modification	C:\Windows\Installer\	msiexec.exe
File created	C:\Windows\Installer\inprogressinstallinfo.ipi	msiexec.exe
File created	C:\Windows\Installer\e576707.msi	msiexec.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.log	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI67C3.tmp	msiexec.exe
File created	C:\Windows\Installer\SourceHash{52EF198D-0C6C-406A-803F-F86D93DD7930}	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI6880.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\e576707.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI6755.tmp	msiexec.exe

Loads dropped DLL 9 IoCs

Processes:

MsiExec.exeMsiExec.exe

pid process

1180 MsiExec.exe
1180 MsiExec.exe
1180 MsiExec.exe
1180 MsiExec.exe
1180 MsiExec.exe
1180 MsiExec.exe
3048 MsiExec.exe
3048 MsiExec.exe
3048 MsiExec.exe

pid	process
1180	MsiExec.exe
1180	MsiExec.exe
1180	MsiExec.exe
1180	MsiExec.exe
1180	MsiExec.exe
1180	MsiExec.exe
3048	MsiExec.exe
3048	MsiExec.exe
3048	MsiExec.exe

Checks SCSI registry key(s) 3 TTPs 5 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

vssvc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Device Parameters	vssvc.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Device Parameters	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Device Parameters\Partmgr	vssvc.exe
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Device Parameters\Partmgr\PartitionTableCache = 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	vssvc.exe
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Device Parameters\Partmgr\SnapshotDataCache = 534e41505041525401000000700000008ec7416a0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	vssvc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

msiexec.exe

pid process

2472 msiexec.exe
2472 msiexec.exe

pid	process
2472	msiexec.exe
2472	msiexec.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

msiexec.exemsiexec.exe

description	pid	process
Token: SeShutdownPrivilege	4364	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4364	msiexec.exe
Token: SeSecurityPrivilege	2472	msiexec.exe
Token: SeCreateTokenPrivilege	4364	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	4364	msiexec.exe
Token: SeLockMemoryPrivilege	4364	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4364	msiexec.exe
Token: SeMachineAccountPrivilege	4364	msiexec.exe
Token: SeTcbPrivilege	4364	msiexec.exe
Token: SeSecurityPrivilege	4364	msiexec.exe
Token: SeTakeOwnershipPrivilege	4364	msiexec.exe
Token: SeLoadDriverPrivilege	4364	msiexec.exe
Token: SeSystemProfilePrivilege	4364	msiexec.exe
Token: SeSystemtimePrivilege	4364	msiexec.exe
Token: SeProfSingleProcessPrivilege	4364	msiexec.exe
Token: SeIncBasePriorityPrivilege	4364	msiexec.exe
Token: SeCreatePagefilePrivilege	4364	msiexec.exe
Token: SeCreatePermanentPrivilege	4364	msiexec.exe
Token: SeBackupPrivilege	4364	msiexec.exe
Token: SeRestorePrivilege	4364	msiexec.exe
Token: SeShutdownPrivilege	4364	msiexec.exe
Token: SeDebugPrivilege	4364	msiexec.exe
Token: SeAuditPrivilege	4364	msiexec.exe
Token: SeSystemEnvironmentPrivilege	4364	msiexec.exe
Token: SeChangeNotifyPrivilege	4364	msiexec.exe
Token: SeRemoteShutdownPrivilege	4364	msiexec.exe
Token: SeUndockPrivilege	4364	msiexec.exe
Token: SeSyncAgentPrivilege	4364	msiexec.exe
Token: SeEnableDelegationPrivilege	4364	msiexec.exe
Token: SeManageVolumePrivilege	4364	msiexec.exe
Token: SeImpersonatePrivilege	4364	msiexec.exe
Token: SeCreateGlobalPrivilege	4364	msiexec.exe
Token: SeCreateTokenPrivilege	4364	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	4364	msiexec.exe
Token: SeLockMemoryPrivilege	4364	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4364	msiexec.exe
Token: SeMachineAccountPrivilege	4364	msiexec.exe
Token: SeTcbPrivilege	4364	msiexec.exe
Token: SeSecurityPrivilege	4364	msiexec.exe
Token: SeTakeOwnershipPrivilege	4364	msiexec.exe
Token: SeLoadDriverPrivilege	4364	msiexec.exe
Token: SeSystemProfilePrivilege	4364	msiexec.exe
Token: SeSystemtimePrivilege	4364	msiexec.exe
Token: SeProfSingleProcessPrivilege	4364	msiexec.exe
Token: SeIncBasePriorityPrivilege	4364	msiexec.exe
Token: SeCreatePagefilePrivilege	4364	msiexec.exe
Token: SeCreatePermanentPrivilege	4364	msiexec.exe
Token: SeBackupPrivilege	4364	msiexec.exe
Token: SeRestorePrivilege	4364	msiexec.exe
Token: SeShutdownPrivilege	4364	msiexec.exe
Token: SeDebugPrivilege	4364	msiexec.exe
Token: SeAuditPrivilege	4364	msiexec.exe
Token: SeSystemEnvironmentPrivilege	4364	msiexec.exe
Token: SeChangeNotifyPrivilege	4364	msiexec.exe
Token: SeRemoteShutdownPrivilege	4364	msiexec.exe
Token: SeUndockPrivilege	4364	msiexec.exe
Token: SeSyncAgentPrivilege	4364	msiexec.exe
Token: SeEnableDelegationPrivilege	4364	msiexec.exe
Token: SeManageVolumePrivilege	4364	msiexec.exe
Token: SeImpersonatePrivilege	4364	msiexec.exe
Token: SeCreateGlobalPrivilege	4364	msiexec.exe
Token: SeCreateTokenPrivilege	4364	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	4364	msiexec.exe
Token: SeLockMemoryPrivilege	4364	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

msiexec.exe

pid process

4364 msiexec.exe
4364 msiexec.exe

pid	process
4364	msiexec.exe
4364	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

msiexec.exe

description	pid	process	target process
PID 2472 wrote to memory of 1180	2472	msiexec.exe	MsiExec.exe
PID 2472 wrote to memory of 1180	2472	msiexec.exe	MsiExec.exe
PID 2472 wrote to memory of 1180	2472	msiexec.exe	MsiExec.exe
PID 2472 wrote to memory of 4180	2472	msiexec.exe	srtasks.exe
PID 2472 wrote to memory of 4180	2472	msiexec.exe	srtasks.exe
PID 2472 wrote to memory of 3048	2472	msiexec.exe	MsiExec.exe
PID 2472 wrote to memory of 3048	2472	msiexec.exe	MsiExec.exe
PID 2472 wrote to memory of 3048	2472	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\avp.msi
1⤵
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:4364

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Enumerates connected drives
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2472
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding B0FEF125D375A3D696A0A05789A3B589 C
  2⤵
  - Loads dropped DLL
  PID:1180
- C:\Windows\system32\srtasks.exe
  C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
  2⤵
  PID:4180
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding 87F9C1008400BA9455956C20DDD128A2
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  PID:3048

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Checks SCSI registry key(s)
PID:1468

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

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Config.Msi\e576708.rbs

Filesize
1KB

MD5
7f7a30ff0e3aceb286e68b17bc937e7a

SHA1
e7cad2feaf9c68d75049be39182bf7a3d1bbc8ac

SHA256
a5962f190f18ab6c61d70a0d08f86f9b6261d8b498befb7edc14239a109635f2

SHA512
cfc06ef1ed8e0d082e9a36a9ed6c9e9248263767510c0cd54e43d975b8ebf7fa2a07ed937defdbc99678054ae9b04a5b02820f39623347c19a4d7f1ebfeedda6

Download Submit
C:\Users\Admin\AppData\Local\Temp\MSI3B73.tmp

Filesize
436KB

MD5
475d20c0ea477a35660e3f67ecf0a1df

SHA1
67340739f51e1134ae8f0ffc5ae9dd710e8e3a08

SHA256
426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd

SHA512
99525aaab2ab608134b5d66b5313e7fc3c2e2877395c5c171897d7a6c66efb26b606de1a4cb01118c2738ea4b6542e4eb4983e631231b3f340bf85e509a9589e

Download Submit
C:\Users\Admin\AppData\Local\sharepoint\forcedelctl.dll

Filesize
956KB

MD5
b28a478eb5b99efcdc7caf428bffb89a

SHA1
d394c7b8fe15753bfbff79fb4f648f6f8bae70f9

SHA256
3bca1dcaef4430272b9029c9a4bc8be0d45ecff66e8de8679ed30d8afab00f6f

SHA512
decb2581f64949bfaaaf0368917f0705d7a4b7392ec272eda025cf06a4384ec4cdd5202081c2e085f00645029dd96bfef262e8628bed1861185adf6281c1cc88

Download Submit
\??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2

Filesize
23.7MB

MD5
20e81fd7fe6425ca19775aa5def3c30b

SHA1
304fbb1fb86b6c257d6dbfab5e20dee3ff6e0e3d

SHA256
07a04caf1c8593e17c287efa93d7e0328b3dd6ffbcdfb30e7fc0ed3902b57f64

SHA512
6b3f143d28cd6cf2aefab8f0bd8454b9bafbf05d2f4082cdbe7a4a6cd624b860a61754bf7677c57471b3c5b07b190936af054f760b7ac8f2dbf073fe971cc5cc

Download Submit
\??\Volume{b97ed4d9-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{719eb1cd-eb7f-4838-87fa-764ff4a505f7}_OnDiskSnapshotProp

Filesize
6KB

MD5
93553d8d1d84235959f1535723759fb7

SHA1
3b70e4a63a1a04b07990365584aae7eb82e6175b

SHA256
56d829686dfed10fa4caac364818a45915344dbd1abfac1371514f9f6a78e5a3

SHA512
5c7305b4fd9158892f61fe37b3b7791c438dd7c5cbaaeb0d7fde5c6f04f4fa9ce35b4533f9881b6e9d179e95008e741b5f575ac05c5a9eec8315a177a24eb9a1

Download Submit
memory/3048-45-0x0000000010000000-0x00000000100F9000-memory.dmp

Filesize
996KB

Download
memory/3048-46-0x0000000003190000-0x0000000003203000-memory.dmp

Filesize
460KB

Download
memory/3048-51-0x0000000010000000-0x00000000100F9000-memory.dmp

Filesize
996KB

Download
memory/3048-52-0x0000000010000000-0x00000000100F9000-memory.dmp

Filesize
996KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads