7222808045f7dc339e9e8835349dadab65ea3793b190038baf648b49c17cbb25

Analysis

max time kernel
128s
max time network
141s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
27/06/2024, 15:38

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General

Target

YoudaoDictSetup.msi
Size

100.6MB
MD5

5a46dd86d5a03893a51684959633c1cd
SHA1

68047c79ac322c47ee2fa658049897031d9b0e69
SHA256

7222808045f7dc339e9e8835349dadab65ea3793b190038baf648b49c17cbb25
SHA512

570ffdbc719f2f6d71b5b0417c87cdc001086519102c83bfb63921517316f85ee85c0fd5a6676c76a5f970645549283e3924c02b2f3001c3108cf4cedb36c901
SSDEEP

1572864:Nu5jONxwobQFRGSVdYnT6kyAWCWLsL4v4ePHMH2KHXyTwONTdxO:N00k+SgGk3HWgfe82KiTwOpdx

Score

6^/10

persistence privilege_escalation

Malware Config

Signatures

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

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

Drops file in Windows directory 17 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.log	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI6E89.tmp	msiexec.exe
File created	C:\Windows\Installer\inprogressinstallinfo.ipi	msiexec.exe
File created	C:\Windows\SystemTemp\~DF4BFBB171FFE232E2.TMP	msiexec.exe
File created	C:\Windows\SystemTemp\~DFDBE710E3DEF4C6F3.TMP	msiexec.exe
File opened for modification	C:\Windows\Installer\e576d8f.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI6FB6.tmp	msiexec.exe
File created	C:\Windows\SystemTemp\~DFACCE1A77E6FF0ACF.TMP	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI71AB.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI6F95.tmp	msiexec.exe
File created	C:\Windows\SystemTemp\~DF9EB23A2431DA2EC4.TMP	msiexec.exe
File created	C:\Windows\Installer\e576d8f.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI6F36.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI6F85.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File created	C:\Windows\Installer\SourceHash{A5BBA976-4B07-4766-95EA-8521D8C0711D}	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI72A6.tmp	msiexec.exe

Executes dropped EXE 2 IoCs

pid	Process
3148	MSI72A6.tmp
3112	YoudaoDict_fanyiweb_navigation.exe

Loads dropped DLL 11 IoCs

pid	Process
4872	MsiExec.exe
4872	MsiExec.exe
4872	MsiExec.exe
4872	MsiExec.exe
4872	MsiExec.exe
3112	YoudaoDict_fanyiweb_navigation.exe
3112	YoudaoDict_fanyiweb_navigation.exe
3112	YoudaoDict_fanyiweb_navigation.exe
3112	YoudaoDict_fanyiweb_navigation.exe
3112	YoudaoDict_fanyiweb_navigation.exe
3112	YoudaoDict_fanyiweb_navigation.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Installer Packages 1 TTPs 1 IoCs

persistence privilege_escalation

Installer Packages

T1546.016

pid	Process
4636	msiexec.exe

Modifies data under HKEY_USERS 3 IoCs

description	ioc	Process
Key deleted	\REGISTRY\USER\.DEFAULT\SOFTWARE\CLASSES\LOCAL SETTINGS\MUICACHE\2A\52C64B7E	msiexec.exe
Key deleted	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a	msiexec.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2b	msiexec.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2468	msiexec.exe
2468	msiexec.exe

Suspicious use of AdjustPrivilegeToken 52 IoCs

description	pid	Process
Token: SeShutdownPrivilege	4636	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4636	msiexec.exe
Token: SeSecurityPrivilege	2468	msiexec.exe
Token: SeCreateTokenPrivilege	4636	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	4636	msiexec.exe
Token: SeLockMemoryPrivilege	4636	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4636	msiexec.exe
Token: SeMachineAccountPrivilege	4636	msiexec.exe
Token: SeTcbPrivilege	4636	msiexec.exe
Token: SeSecurityPrivilege	4636	msiexec.exe
Token: SeTakeOwnershipPrivilege	4636	msiexec.exe
Token: SeLoadDriverPrivilege	4636	msiexec.exe
Token: SeSystemProfilePrivilege	4636	msiexec.exe
Token: SeSystemtimePrivilege	4636	msiexec.exe
Token: SeProfSingleProcessPrivilege	4636	msiexec.exe
Token: SeIncBasePriorityPrivilege	4636	msiexec.exe
Token: SeCreatePagefilePrivilege	4636	msiexec.exe
Token: SeCreatePermanentPrivilege	4636	msiexec.exe
Token: SeBackupPrivilege	4636	msiexec.exe
Token: SeRestorePrivilege	4636	msiexec.exe
Token: SeShutdownPrivilege	4636	msiexec.exe
Token: SeDebugPrivilege	4636	msiexec.exe
Token: SeAuditPrivilege	4636	msiexec.exe
Token: SeSystemEnvironmentPrivilege	4636	msiexec.exe
Token: SeChangeNotifyPrivilege	4636	msiexec.exe
Token: SeRemoteShutdownPrivilege	4636	msiexec.exe
Token: SeUndockPrivilege	4636	msiexec.exe
Token: SeSyncAgentPrivilege	4636	msiexec.exe
Token: SeEnableDelegationPrivilege	4636	msiexec.exe
Token: SeManageVolumePrivilege	4636	msiexec.exe
Token: SeImpersonatePrivilege	4636	msiexec.exe
Token: SeCreateGlobalPrivilege	4636	msiexec.exe
Token: SeRestorePrivilege	2468	msiexec.exe
Token: SeTakeOwnershipPrivilege	2468	msiexec.exe
Token: SeRestorePrivilege	2468	msiexec.exe
Token: SeTakeOwnershipPrivilege	2468	msiexec.exe
Token: SeRestorePrivilege	2468	msiexec.exe
Token: SeTakeOwnershipPrivilege	2468	msiexec.exe
Token: SeRestorePrivilege	2468	msiexec.exe
Token: SeTakeOwnershipPrivilege	2468	msiexec.exe
Token: SeRestorePrivilege	2468	msiexec.exe
Token: SeTakeOwnershipPrivilege	2468	msiexec.exe
Token: SeRestorePrivilege	2468	msiexec.exe
Token: SeTakeOwnershipPrivilege	2468	msiexec.exe
Token: SeRestorePrivilege	2468	msiexec.exe
Token: SeTakeOwnershipPrivilege	2468	msiexec.exe
Token: SeRestorePrivilege	2468	msiexec.exe
Token: SeTakeOwnershipPrivilege	2468	msiexec.exe
Token: SeRestorePrivilege	2468	msiexec.exe
Token: SeTakeOwnershipPrivilege	2468	msiexec.exe
Token: SeRestorePrivilege	2468	msiexec.exe
Token: SeTakeOwnershipPrivilege	2468	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4636	msiexec.exe
4636	msiexec.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2468 wrote to memory of 4872	2468	msiexec.exe	81
PID 2468 wrote to memory of 4872	2468	msiexec.exe	81
PID 2468 wrote to memory of 4872	2468	msiexec.exe	81
PID 2468 wrote to memory of 3148	2468	msiexec.exe	82
PID 2468 wrote to memory of 3148	2468	msiexec.exe	82
PID 2468 wrote to memory of 3148	2468	msiexec.exe	82

C:\Windows\system32\msiexec.exe
msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\YoudaoDictSetup.msi
1⤵
- Enumerates connected drives
- Event Triggered Execution: Installer Packages
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:4636

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Enumerates connected drives
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2468
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding EA01E5F2F1FE4FBB26496486606EDAB5
  2⤵
  - Loads dropped DLL
  PID:4872
- C:\Windows\Installer\MSI72A6.tmp
  "C:\Windows\Installer\MSI72A6.tmp" /DontWait "C:\Users\Admin\AppData\Local\Temp\YoudaoDict_fanyiweb_navigation.exe"
  2⤵
  - Executes dropped EXE
  PID:3148

C:\Users\Admin\AppData\Local\Temp\YoudaoDict_fanyiweb_navigation.exe
"C:\Users\Admin\AppData\Local\Temp\YoudaoDict_fanyiweb_navigation.exe"
1⤵
- Executes dropped EXE
- Loads dropped DLL
PID:3112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

Installer Packages

T1546.016

Privilege Escalation

Event Triggered Execution

T1546

Installer Packages

T1546.016

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Config.Msi\e576d92.rbs

Filesize
420KB

MD5
7d822a3b83a9799da0e7167d24997832

SHA1
431e3b180ab607b54d85f0b8edea37dd4213b5bd

SHA256
ba74a231081fc15fa72c817373356aee992285ccfc0895d75ef40f4bf9cb7245

SHA512
960a34d6926421fb636df010724e58894ee908ad35a0c9572df0e18640779730d89f9f8048f0c36c60dcb4369f914938882bcc23297bd1fccc0b3adf123d25be

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy766A.tmp\LockedList.dll

Filesize
95KB

MD5
5a94bf8916a11b5fe94aca44886c9393

SHA1
820d9c5e3365e323d6f43d3cce26fd9d2ea48b93

SHA256
0b1e46044b580121f30bedb2b5412d3170c6afaa7800d702ee71f7666904236d

SHA512
79cba3dcb249d88a6a6cfb4efcb65cc42a240af4edb14bcc7546d9c701a7b642362f9fe0488691a8906607ecc76f7b5ee5a4282fa057053b258eea143ac90c20

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy766A.tmp\OP_WndProc.dll

Filesize
48KB

MD5
765cf74fc709fb3450fa71aac44e7f53

SHA1
b423271b4faac68f88fef15fa4697cf0149bad85

SHA256
cc46ab0bf6b19a2601cd002b06769ad08baf4ed0b14e8728973f8af96bdee57e

SHA512
0c347d9a2960a17f8ec9b78ede972bf3cf6567fd079a6aa5a6ac262ac227bfd36acc53a7a127fd7f387dec9f4509f4f3f754b10853a213e993ea1573e74ed7e6

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy766A.tmp\SkinBtn.dll

Filesize
4KB

MD5
29818862640ac659ce520c9c64e63e9e

SHA1
485e1e6cc552fa4f05fb767043b1e7c9eb80be64

SHA256
e96afa894a995a6097a405df76155a7a39962ff6cae7a59d89a25e5a34ab9eeb

SHA512
ebb94eb21e060fb90ec9c86787eada42c7c9e1e7628ea4b16d3c7b414f554a94d5e4f4abe0e4ee30fddf4f904fd3002770a9b967fbd0feeca353e21079777057

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy766A.tmp\System.dll

Filesize
11KB

MD5
bf712f32249029466fa86756f5546950

SHA1
75ac4dc4808ac148ddd78f6b89a51afbd4091c2e

SHA256
7851cb12fa4131f1fee5de390d650ef65cac561279f1cfe70ad16cc9780210af

SHA512
13f69959b28416e0b8811c962a49309dca3f048a165457051a28a3eb51377dcaf99a15e86d7eee8f867a9e25ecf8c44da370ac8f530eeae7b5252eaba64b96f4

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy766A.tmp\btn_agree.bmp

Filesize
38KB

MD5
dab018047c171165c18329d5c59b617e

SHA1
88848ac4aceb7358f13d225de6d4fd0a5696517a

SHA256
1cf0d9e908c3134ffce859483504420578ee8ccda399c20ecc035d1e4da93734

SHA512
1f6c50885290a3b983b7b8ac4bfec546d74acf2c50bfd0d245164a5ee149fa28a2871d545286108345c055c4f86f2b115509fcf74a6b60bc3f814c1c1635162d

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy766A.tmp\btn_disagree.bmp

Filesize
38KB

MD5
5f7b90c87ea0517771862fae5f11ce94

SHA1
fc9f195e888d960139278c04a0e78996c6442d5b

SHA256
f906101e512c3119e71b6949d68ac01c8fdb5ef06f4c73eaef9a3f0bd6021ce2

SHA512
dc08461f1e823d898f5ba42c9d1a131f599adbcb0af28c5de950a01ec74015d3da933e675986b71dde09cc74e00689ebe5f5f6cff857d335322f18d3f385edf0

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy766A.tmp\checkbox_null.bmp

Filesize
3KB

MD5
5754c67775c3f4f50a4780b3bca026b1

SHA1
3e95c72c13d6175ef275280fe270d678acee46e9

SHA256
2a5d67757f61ca00227e9b482a7b15365ba836c11f5b7d723b650e6d4108e739

SHA512
df6744556a24d4f6b907fc6126035adca4d3ce8aba52b26112e59b24ebfc5c4e079ee8ed74df3f28fc62cc3e207041cf8fb6b6a84ec58125122c214924e0a97f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy766A.tmp\nsDialogs.dll

Filesize
9KB

MD5
4ccc4a742d4423f2f0ed744fd9c81f63

SHA1
704f00a1acc327fd879cf75fc90d0b8f927c36bc

SHA256
416133dd86c0dff6b0fcaf1f46dfe97fdc85b37f90effb2d369164a8f7e13ae6

SHA512
790c5eb1f8b297e45054c855b66dfc18e9f3f1b1870559014dbefa3b9d5b6d33a993a9e089202e70f51a55d859b74e8605c6f633386fd9189b6f78941bf1bfdb

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsy766A.tmp\slide8.bmp

Filesize
908KB

MD5
6d20c27bc3168af9c076b459f1da05dc

SHA1
d49795bc5ec392f5da3a65958bc8bd2dbaaddcfe

SHA256
da8894cbad7c440ad992416421611071d9b82cda3a3c8287f7c1d75c0386f468

SHA512
e4233a72e59bd1f7ee0dc4559ef06b360025e52414c2d6f4ee317e5c193109c1e4be70fc89e74e4a6061035c7e18b97e61ab96716b4ab0ab997b178bcef9d7bb

Download Submit
C:\Windows\Installer\MSI6E89.tmp

Filesize
587KB

MD5
c7fbd5ee98e32a77edf1156db3fca622

SHA1
3e534fc55882e9fb940c9ae81e6f8a92a07125a0

SHA256
e140990b509dd6884a5742bde64f2cdaa10012d472b0b32de43ebecbc83242b6

SHA512
8691ac8b214cc1e4f34a3ab2bbc0c2391f7f11ebbe5db0dc82825195b5fe5a05310ed1e14d253a9b74a64050d2f2a6623dd2fcd912f80fef51e51845ef1e3a1a

Download Submit
C:\Windows\Installer\MSI72A6.tmp

Filesize
419KB

MD5
cac0eaeb267d81cf3fa968ee23a6af9d

SHA1
cf6ae8e44fb4949d5f0b01b110eaba49d39270a2

SHA256
f1dd0dd1e83b28ffa2ed30f46f98e94a4919ec1f4e9d33720354288b77153774

SHA512
8edf9f733dda9000a6e2b70da61912dbc15f74c836d738391ceddcdff20f5b420a678450523cf331aa9bce90217aa92ac6e73d1880ae15c9842ccc7d3296f95b

Download Submit