b4fc5b365d6ccb4dc726a82c8b3f1c39ce16bf848c779706569c938d1a6855a8 | Triage

Analysis

max time kernel
149s
max time network
168s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
13-03-2024 02:15

Sharing

Report Analysis Logs

General

Target

malware-sample-library-master/APT28 FancyBear/APT28Hospital.docm
Size

76KB
MD5

9b10685b774a783eabfecdb6119a8aa3
SHA1

f293a2bfb728060c54efeeb03c5323893b5c80df
SHA256

a4a455db9f297e2b9fe99d63c9d31e827efb2cda65be445625fa64f4fce7f797
SHA512

26a0f0dd37439da543526704b5a689ed9f9317baf357d9a7a4d885855d80b5745a07972da3a1c5b06f39fcbbbff9e94f0729edbdba8963b0dcb8c650addbdc48
SSDEEP

1536:009J0E4v13p/gL7Jj4P9bvzKGXpIiUvh23oKRO/HhcKmFoR:fb4v13pYL7J49bvr5Iias32Jc5FoR

Score

10^/10

persistence

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exe

description pid pid_target process target process

Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 5044 4016 rundll32.exe
Blocklisted process makes network request 4 IoCs

Processes:

rundll32.exe

flow pid process

46 4452 rundll32.exe
53 4452 rundll32.exe
84 4452 rundll32.exe
85 4452 rundll32.exe
Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

1996 rundll32.exe
4452 rundll32.exe

Registers new Windows logon scripts automatically executed at logon. 1 TTPs 1 IoCs

Logon Script (Windows)

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Environment\UserInitMprLogonScript = "C:\\Users\\Admin\\AppData\\Roaming\\mrset.bat"	rundll32.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

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

Query Registry

Peripheral Device Discovery

System Information Discovery

Processes:

rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	rundll32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	rundll32.exe

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

System Information Discovery

Processes:

WINWORD.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

System Information Discovery

Processes:

WINWORD.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

3888 WINWORD.EXE
3888 WINWORD.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

4452 rundll32.exe
4452 rundll32.exe
Suspicious use of SetWindowsHookEx 7 IoCs

Processes:

WINWORD.EXE

pid process

3888 WINWORD.EXE
3888 WINWORD.EXE
3888 WINWORD.EXE
3888 WINWORD.EXE
3888 WINWORD.EXE
3888 WINWORD.EXE
3888 WINWORD.EXE

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

rundll32.exerundll32.execmd.exe

description	pid	process	target process
PID 5044 wrote to memory of 1996	5044	rundll32.exe	rundll32.exe
PID 5044 wrote to memory of 1996	5044	rundll32.exe	rundll32.exe
PID 5044 wrote to memory of 1996	5044	rundll32.exe	rundll32.exe
PID 1996 wrote to memory of 4180	1996	rundll32.exe	cmd.exe
PID 1996 wrote to memory of 4180	1996	rundll32.exe	cmd.exe
PID 1996 wrote to memory of 4180	1996	rundll32.exe	cmd.exe
PID 4180 wrote to memory of 4452	4180	cmd.exe	rundll32.exe
PID 4180 wrote to memory of 4452	4180	cmd.exe	rundll32.exe
PID 4180 wrote to memory of 4452	4180	cmd.exe	rundll32.exe

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\malware-sample-library-master\APT28 FancyBear\APT28Hospital.docm" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:3888

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Roaming\user.dat, #1
1⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:5044

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Roaming\user.dat, #1
2⤵
- Loads dropped DLL
- Registers new Windows logon scripts automatically executed at logon.
- Suspicious use of WriteProcessMemory
PID:1996

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\mrset.bat
3⤵
- Suspicious use of WriteProcessMemory
PID:4180

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Roaming\mvtband.dat",#1
4⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
PID:4452

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Initialization Scripts

Logon Script (Windows)

Privilege Escalation

Boot or Logon Initialization Scripts

Logon Script (Windows)

Defense Evasion

Credential Access

Discovery

Query Registry

Peripheral Device Discovery

System Information Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\UProof\ExcludeDictionaryEN0409.lex
Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Roaming\mrset.bat
Filesize
106B

MD5
583ea25b69feded9f65cfbff169147a9

SHA1
56e6487b283f2718483fe8823f70e36ffbce6fb7

SHA256
51eaf3b30c1ea932843cb9f5b6fb41804976d94a53a507ccb292b8392276cfd6

SHA512
adeb0df1f5edf3d1348f048da8760c2f8a9b3b0a8fd87a92ec62fbf0fc83681b928c2bee064a0b731bc4842c5d34f9e00e00303c4de4a56c9027e127d30260f5

Download Submit
C:\Users\Admin\AppData\Roaming\mvtband.dat
Filesize
29KB

MD5
1421419d1be31f1f9ea60e8ed87277db

SHA1
f9fd3f1d8da4ffd6a494228b934549d09e3c59d1

SHA256
8c47961181d9929333628af20bdd750021e925f40065374e6b876e3b8afbba57

SHA512
a6825107c5e60231dcf631e702c3b75422bad8644ac69df21aa9e9437758850f31d84fe95a4e0386235b3b7103bbcc8945365f4d804cbb16e161c5577680a072

Download Submit
C:\Users\Admin\AppData\Roaming\user.dat
Filesize
69KB

MD5
b1d1a2c64474d2f6e7a5db71ccbafa31

SHA1
91d8e6f993e8b294924811df052e96cbec0545ad

SHA256
58b223f74992f371cab8f1df7c03b9b66f2ea9e3c9e22122898a9be62a05c0b4

SHA512
7f3a458083159e51e505074c46fa18a744bed43a21efca957a0bd60a8c8347597025dedf500b73c4cb5f5a107fb8975cb52b453deddf9fc69e46f8d417004b44

Download Submit
memory/3888-44-0x0000016B59700000-0x0000016B5A6D0000-memory.dmp

Filesize
15.8MB

Download
memory/3888-55-0x0000016B59700000-0x0000016B5A6D0000-memory.dmp

Filesize
15.8MB

Download
memory/3888-6-0x00007FFE05430000-0x00007FFE05625000-memory.dmp

Filesize
2.0MB

Download
memory/3888-8-0x00007FFDC54B0000-0x00007FFDC54C0000-memory.dmp

Filesize
64KB

Download
memory/3888-9-0x00007FFE05430000-0x00007FFE05625000-memory.dmp

Filesize
2.0MB

Download
memory/3888-7-0x00007FFE05430000-0x00007FFE05625000-memory.dmp

Filesize
2.0MB

Download
memory/3888-10-0x00007FFE05430000-0x00007FFE05625000-memory.dmp

Filesize
2.0MB

Download
memory/3888-11-0x00007FFE05430000-0x00007FFE05625000-memory.dmp

Filesize
2.0MB

Download
memory/3888-12-0x00007FFDC2C70000-0x00007FFDC2C80000-memory.dmp

Filesize
64KB

Download
memory/3888-13-0x00007FFDC2C70000-0x00007FFDC2C80000-memory.dmp

Filesize
64KB

Download
memory/3888-26-0x0000016B59700000-0x0000016B5A6D0000-memory.dmp

Filesize
15.8MB

Download
memory/3888-37-0x0000016B59700000-0x0000016B5A6D0000-memory.dmp

Filesize
15.8MB

Download
memory/3888-0-0x00007FFDC54B0000-0x00007FFDC54C0000-memory.dmp

Filesize
64KB

Download
memory/3888-50-0x0000016B59700000-0x0000016B5A6D0000-memory.dmp

Filesize
15.8MB

Download
memory/3888-4-0x00007FFE05430000-0x00007FFE05625000-memory.dmp

Filesize
2.0MB

Download
memory/3888-5-0x00007FFDC54B0000-0x00007FFDC54C0000-memory.dmp

Filesize
64KB

Download
memory/3888-3-0x00007FFE05430000-0x00007FFE05625000-memory.dmp

Filesize
2.0MB

Download
memory/3888-2-0x00007FFDC54B0000-0x00007FFDC54C0000-memory.dmp

Filesize
64KB

Download
memory/3888-1-0x00007FFDC54B0000-0x00007FFDC54C0000-memory.dmp

Filesize
64KB

Download
memory/3888-75-0x00007FFE05430000-0x00007FFE05625000-memory.dmp

Filesize
2.0MB

Download
memory/3888-76-0x0000016B59700000-0x0000016B5A6D0000-memory.dmp

Filesize
15.8MB

Download
memory/3888-77-0x0000016B59700000-0x0000016B5A6D0000-memory.dmp

Filesize
15.8MB

Download
memory/3888-78-0x0000016B59700000-0x0000016B5A6D0000-memory.dmp

Filesize
15.8MB

Download
memory/3888-79-0x0000016B59700000-0x0000016B5A6D0000-memory.dmp

Filesize
15.8MB

Download
memory/3888-103-0x00007FFDC54B0000-0x00007FFDC54C0000-memory.dmp

Filesize
64KB

Download
memory/3888-104-0x00007FFDC54B0000-0x00007FFDC54C0000-memory.dmp

Filesize
64KB

Download
memory/3888-105-0x00007FFDC54B0000-0x00007FFDC54C0000-memory.dmp

Filesize
64KB

Download
memory/3888-106-0x00007FFDC54B0000-0x00007FFDC54C0000-memory.dmp

Filesize
64KB

Download
memory/3888-107-0x00007FFE05430000-0x00007FFE05625000-memory.dmp

Filesize
2.0MB

Download
memory/3888-108-0x00007FFE05430000-0x00007FFE05625000-memory.dmp

Filesize
2.0MB

Download
memory/3888-109-0x00007FFE05430000-0x00007FFE05625000-memory.dmp

Filesize
2.0MB

Download