19cd8f798e2e008e2e34816bee574bc376bcaa260c4f6e2cc17ec24d88c3b39c

General

Target

質問事項_20241119.xlsx
Size

46KB
MD5

b8b6866de956126b4a4e0c68a423a1b0
SHA1

d0e438bcfb27b469aabbb4bc55971e7eabbfe3df
SHA256

19cd8f798e2e008e2e34816bee574bc376bcaa260c4f6e2cc17ec24d88c3b39c
SHA512

3389dd5bb0fe8a675eee9a531b45b121d2a37a180ec8c598a2ecc126acbe4f6b3351eccabba01a0ddea6248844ea409946819f10415e10b1edf0342d361836f8
SSDEEP

768:oktZf/HwMhZhj7C6srKUcfDL1oloob1QJeD9esrgG+we82mPWbc1:JP3QMnpC6oWqZbCJeD9tUGwI

Score

3^/10

discovery

Malware Config

Signatures

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rmactivate.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Internet Explorer\Main	EXCEL.EXE

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_Classes\Local Settings	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_Classes\Local Settings	rmactivate.exe
Key created	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\Local Settings\Software\Microsoft\uDRM	rmactivate.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\Local Settings\Software\Microsoft\uDRM\MK = 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	rmactivate.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\Local Settings\Software\Microsoft\uDRM\SK = 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	rmactivate.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2512	EXCEL.EXE

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: 33	2264	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	2264	AUDIODG.EXE
Token: 33	2264	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	2264	AUDIODG.EXE
Token: SeShutdownPrivilege	2512	EXCEL.EXE

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
2512	EXCEL.EXE
2512	EXCEL.EXE
2512	EXCEL.EXE
2512	EXCEL.EXE
2512	EXCEL.EXE
2512	EXCEL.EXE
2512	EXCEL.EXE
2512	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2512 wrote to memory of 2908	2512	EXCEL.EXE	31
PID 2512 wrote to memory of 2908	2512	EXCEL.EXE	31
PID 2512 wrote to memory of 2908	2512	EXCEL.EXE	31
PID 2512 wrote to memory of 2908	2512	EXCEL.EXE	31

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\質問事項_20241119.xlsx
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2512
- C:\Windows\SysWOW64\rmactivate.exe
  "C:\Windows\SysWOW64\rmactivate.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2908

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x53c
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2264

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\DRM\CERT-Machine.drm

Filesize
25KB

MD5
59394a74cc9d39d90b2f55ef23507a4c

SHA1
14668f9dfb6ab41fe773e58a380c6fbff5d92057

SHA256
1c42327c7284410d39289103e531955de417a27919b9597105d0df9c25409091

SHA512
dd55f8ca25fe2e3c31900e7143c2428a12ae5b6196c856e4a23ff085965aefae01e4969f40a1223f0343d3d1a7747d54ce2be9b9669fc0e7a8a630683c3c5895

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabCA32.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/2512-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2512-1-0x0000000071CCD000-0x0000000071CD8000-memory.dmp

Filesize
44KB

Download
memory/2512-28-0x000000006C2DA000-0x000000006C2E3000-memory.dmp

Filesize
36KB

Download
memory/2512-30-0x0000000071CCD000-0x0000000071CD8000-memory.dmp

Filesize
44KB

Download
memory/2512-31-0x000000006C2DA000-0x000000006C2E3000-memory.dmp

Filesize
36KB

Download
memory/2512-32-0x000000006C280000-0x000000006C2EB000-memory.dmp

Filesize
428KB

Download
memory/2908-15-0x0000000000C03000-0x0000000000C0D000-memory.dmp

Filesize
40KB

Download
memory/2908-27-0x0000000000C03000-0x0000000000C0D000-memory.dmp

Filesize
40KB

Download

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Analysis

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