af582ce1d3bbc2d9201c81a058203e96f81087433b80ddd85f8eb1a66faa8d31

Resubmissions

11-12-2023 15:39

231211-s3p6bacbh4 7

10-12-2023 15:26

09-12-2023 14:29

09-12-2023 11:42

08-12-2023 15:15

05-12-2023 15:49

05-12-2023 04:28

Analysis

max time kernel
47s
max time network
41s
platform
windows11-21h2_x64
resource
win11-20231128-en
resource tags

arch:x64arch:x86image:win11-20231128-enlocale:en-usos:windows11-21h2-x64system
submitted
09-12-2023 11:42

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General

Target

dac.exe
Size

22.6MB
MD5

111983bd0209f1541e9d1ee618be1c45
SHA1

cf15e95ad616bbf3b806b0f6b7290cc14c6b557e
SHA256

af582ce1d3bbc2d9201c81a058203e96f81087433b80ddd85f8eb1a66faa8d31
SHA512

6c1e810557acffc3c10213aa663b7527f4808b418e80c3c5610a5489994138236457aad1ffd28861b912add0aaa66053a4cdac2b3a47167d075f8e9b2d592511
SSDEEP

393216:oHqEnUyriULZiXg6LPmmG3z7z/wQ74cZd060stbgB7OrowyVm9fC8:fXyriULZikmG3zP/p748d0LsqB7uyI48

Score

10^/10

evasion trojan upx

Malware Config

Signatures

UAC bypass 3 TTPs 3 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

reg.exereg.exereg.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	reg.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	reg.exe

Executes dropped EXE 1 IoCs

Processes:

AliWorkbench.exe

pid process

3216 AliWorkbench.exe
Loads dropped DLL 1 IoCs

Processes:

AliWorkbench.exe

pid process

3216 AliWorkbench.exe

pid	process
3216	AliWorkbench.exe

pid	process
3216	AliWorkbench.exe

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral4/memory/972-0-0x0000000180000000-0x0000000180033000-memory.dmp	upx
behavioral4/memory/972-1-0x0000000180000000-0x0000000180033000-memory.dmp	upx
behavioral4/memory/972-3-0x0000000180000000-0x0000000180033000-memory.dmp	upx
behavioral4/memory/972-4-0x0000000180000000-0x0000000180033000-memory.dmp	upx
behavioral4/memory/972-5-0x0000000180000000-0x0000000180033000-memory.dmp	upx
behavioral4/memory/972-34-0x0000000180000000-0x0000000180033000-memory.dmp	upx
behavioral4/memory/972-39-0x0000000180000000-0x0000000180033000-memory.dmp	upx

Enumerates connected drives 3 TTPs 22 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:

AliWorkbench.exe

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

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

AliWorkbench.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	AliWorkbench.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	AliWorkbench.exe

Modifies registry class 1 IoCs

Processes:

dac.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-3167230361-3851490586-2616496888-1000_Classes\Local Settings dac.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

AliWorkbench.exe

pid process

3216 AliWorkbench.exe
3216 AliWorkbench.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3167230361-3851490586-2616496888-1000_Classes\Local Settings	dac.exe

pid	process
3216	AliWorkbench.exe
3216	AliWorkbench.exe

Suspicious use of AdjustPrivilegeToken 15 IoCs

Processes:

dac.exemmc.exemmc.exemmc.exeAliWorkbench.exe

description	pid	process
Token: SeShutdownPrivilege	972	dac.exe
Token: 33	4088	mmc.exe
Token: SeIncBasePriorityPrivilege	4088	mmc.exe
Token: 33	4088	mmc.exe
Token: SeIncBasePriorityPrivilege	4088	mmc.exe
Token: 33	4236	mmc.exe
Token: SeIncBasePriorityPrivilege	4236	mmc.exe
Token: 33	4236	mmc.exe
Token: SeIncBasePriorityPrivilege	4236	mmc.exe
Token: 33	2104	mmc.exe
Token: SeIncBasePriorityPrivilege	2104	mmc.exe
Token: 33	2104	mmc.exe
Token: SeIncBasePriorityPrivilege	2104	mmc.exe
Token: SeShutdownPrivilege	3216	AliWorkbench.exe
Token: SeDebugPrivilege	3216	AliWorkbench.exe

Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

dac.exemmc.exemmc.exemmc.exe

pid process

972 dac.exe
972 dac.exe
4088 mmc.exe
4088 mmc.exe
4236 mmc.exe
4236 mmc.exe
2104 mmc.exe
2104 mmc.exe

pid	process
972	dac.exe
972	dac.exe
4088	mmc.exe
4088	mmc.exe
4236	mmc.exe
4236	mmc.exe
2104	mmc.exe
2104	mmc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

mmc.exemmc.exedac.execmd.exemmc.exeAliWorkbench.exe

description	pid	process	target process
PID 4088 wrote to memory of 2144	4088	mmc.exe	netsh.exe
PID 4088 wrote to memory of 2144	4088	mmc.exe	netsh.exe
PID 4236 wrote to memory of 4996	4236	mmc.exe	netsh.exe
PID 4236 wrote to memory of 4996	4236	mmc.exe	netsh.exe
PID 972 wrote to memory of 2880	972	dac.exe	cmd.exe
PID 972 wrote to memory of 2880	972	dac.exe	cmd.exe
PID 2880 wrote to memory of 2160	2880	cmd.exe	reg.exe
PID 2880 wrote to memory of 2160	2880	cmd.exe	reg.exe
PID 2880 wrote to memory of 2004	2880	cmd.exe	reg.exe
PID 2880 wrote to memory of 2004	2880	cmd.exe	reg.exe
PID 2880 wrote to memory of 4772	2880	cmd.exe	reg.exe
PID 2880 wrote to memory of 4772	2880	cmd.exe	reg.exe
PID 972 wrote to memory of 3576	972	dac.exe	cmd.exe
PID 972 wrote to memory of 3576	972	dac.exe	cmd.exe
PID 2104 wrote to memory of 3216	2104	mmc.exe	AliWorkbench.exe
PID 2104 wrote to memory of 3216	2104	mmc.exe	AliWorkbench.exe
PID 2104 wrote to memory of 3216	2104	mmc.exe	AliWorkbench.exe
PID 3216 wrote to memory of 3532	3216	AliWorkbench.exe	netsh.exe
PID 3216 wrote to memory of 3532	3216	AliWorkbench.exe	netsh.exe
PID 3216 wrote to memory of 3532	3216	AliWorkbench.exe	netsh.exe
PID 3216 wrote to memory of 4704	3216	AliWorkbench.exe	netsh.exe
PID 3216 wrote to memory of 4704	3216	AliWorkbench.exe	netsh.exe
PID 3216 wrote to memory of 4704	3216	AliWorkbench.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\dac.exe
"C:\Users\Admin\AppData\Local\Temp\dac.exe"
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:972

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Roaming\bOav2.bat"
2⤵
- Suspicious use of WriteProcessMemory
PID:2880

C:\Windows\system32\reg.exe
reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v ConsentPromptBehaviorAdmin /t reg_dword /d 0 /F
3⤵
- UAC bypass
PID:2160

C:\Windows\system32\reg.exe
reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t reg_dword /d 0 /F
3⤵
- UAC bypass
PID:2004

C:\Windows\system32\reg.exe
reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v PromptOnSecureDesktop /t reg_dword /d 0 /F
3⤵
- UAC bypass
PID:4772

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c copy /b C:\Users\Public\Pictures\t7H93\8Zn14@f\v+C:\Users\Public\Pictures\t7H93\8Zn14@f\b C:\Users\Public\Pictures\t7H93\8Zn14@f\AliProtect.dll
2⤵
PID:3576

C:\Windows\system32\mmc.exe
C:\Windows\system32\mmc.exe -Embedding
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4088

C:\Windows\System32\netsh.exe
"C:\Windows\System32\netsh.exe" interface ip set address 以太网 static 1.0.0.2 255.255.255.0 1.0.0.1 1
2⤵
PID:2144

C:\Windows\system32\mmc.exe
C:\Windows\system32\mmc.exe -Embedding
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4236

C:\Windows\System32\netsh.exe
"C:\Windows\System32\netsh.exe" interface ip set address \"WLAN\" static 1.0.0.3 255.255.255.0 1.0.0.1 1
2⤵
PID:4996

C:\Windows\system32\mmc.exe
C:\Windows\system32\mmc.exe -Embedding
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2104

C:\Users\Public\Pictures\t7H93\8Zn14@f\AliWorkbench.exe
"C:\Users\Public\Pictures\t7H93\8Zn14@f\AliWorkbench.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Enumerates connected drives
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3216

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\System32\netsh.exe" interface ip set address \"ÒÔÌ«Íø\" dhcp
3⤵
PID:3532

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\System32\netsh.exe" interface ip set address \"WLAN\" dhcp
3⤵
PID:4704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

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:\Users\Admin\AppData\Roaming\bOav2.bat

Filesize
392B

MD5
30d6eb22d6aeec10347239b17b023bf4

SHA1
e2a6f86d66c699f6e0ff1ac4e140af4a2a4637d1

SHA256
659df6b190a0b92fc34e3a4457b4a8d11a26a4caf55de64dfe79eb1276181f08

SHA512
500872c3f2f3f801ec51717690873194675cb7f32cc4a862c09d90c18638d364d49b0e04c32323f52734e5c806e3503a63ac755c7019d762786a72840123df76

Download Submit
C:\Users\Public\Pictures\t7H93\8Zn14@f\AliIMStartup.dll

Filesize
522KB

MD5
9509e2ec8222bbff5871993439a22aab

SHA1
e70859c34c89143fbb947b5f75ea89fa419089de

SHA256
131cf0b47fa91a731f2c26e526f640b51a6a2753059ac6597b562df339fb01c3

SHA512
ffe50081f45eab17b89227f3adfac6ff223e8c33a16eb26ce3e4c89f5d8d7220fa3f34191fc039a23dad9ecb21e7640ef636dad405f76c54ab7fc55d92741b85

Download Submit
C:\Users\Public\Pictures\t7H93\8Zn14@f\AliProtect.dll

Filesize
201KB

MD5
1710628627e94f5f13664d6ce5c221b4

SHA1
7a0205bf1d9ec12cc39e436e7aff008cbe060781

SHA256
fcd97782c39670080559949c74dc6417a0d9e386c3d88ac1f3878f477ddb6686

SHA512
0266714dbe3157d5bcc76e5ac7457aa0d34cbf94e82ad7d6c9c11753850b86da3fb526b89eaae75e20c0629c5204db5f3840f3e70c246264b89841f0606a7cee

Download Submit
C:\Users\Public\Pictures\t7H93\8Zn14@f\AliProtect.dll

Filesize
201KB

MD5
1710628627e94f5f13664d6ce5c221b4

SHA1
7a0205bf1d9ec12cc39e436e7aff008cbe060781

SHA256
fcd97782c39670080559949c74dc6417a0d9e386c3d88ac1f3878f477ddb6686

SHA512
0266714dbe3157d5bcc76e5ac7457aa0d34cbf94e82ad7d6c9c11753850b86da3fb526b89eaae75e20c0629c5204db5f3840f3e70c246264b89841f0606a7cee

Download Submit
C:\Users\Public\Pictures\t7H93\8Zn14@f\AliWorkbench.exe

Filesize
411KB

MD5
405bd58e0a733acd4f986cf8d1a8cd85

SHA1
3d766ea076a36ced02e991d7c72f53be583720e5

SHA256
af04dad1590fd28ad980af3eabee5b3e8a57cede68d42de1e376dfcc4f991994

SHA512
bd9e901576a4928633735f7173830991547d72179e72aa0da6a8a6fe70d5ef4c823c4d32cbcc7f4c571dc8febaee3037b58f896b416d1a675000148e8644b97c

Download Submit
C:\Users\Public\Pictures\t7H93\8Zn14@f\AliWorkbench.exe

Filesize
411KB

MD5
405bd58e0a733acd4f986cf8d1a8cd85

SHA1
3d766ea076a36ced02e991d7c72f53be583720e5

SHA256
af04dad1590fd28ad980af3eabee5b3e8a57cede68d42de1e376dfcc4f991994

SHA512
bd9e901576a4928633735f7173830991547d72179e72aa0da6a8a6fe70d5ef4c823c4d32cbcc7f4c571dc8febaee3037b58f896b416d1a675000148e8644b97c

Download Submit
C:\Users\Public\Pictures\t7H93\8Zn14@f\PX.txt

Filesize
156KB

MD5
5242a61322092441d025bac5a8a24e9c

SHA1
d904961e53f31aae951e6f09926f7ece69193acb

SHA256
87681c4cf2a201a47e33bbcbb43ef735cb841fa34400fed1bc628840f1eebfb7

SHA512
cdbaa3ab0dff88c2f72c783fd1b25366d94f8301a506ee040ed2f8ac1064c415d323c08dbd0bd7226b3abc1b5fdb9a92f46d4a29dad6ea616d8426a17794b353

Download Submit
C:\Users\Public\Pictures\t7H93\8Zn14@f\b

Filesize
100KB

MD5
a40ea9080e94d610ffa7a130212d52b7

SHA1
f0c29ce87d950b7a6a8df8c606fb0f4f8c3a1c45

SHA256
4487eaa8dc762f5dd54c6cb333df1c08692e387cc6e0d2be67bd2b5ed0c5d1f1

SHA512
7834125b90faa6bcdfc638e99b60c19e4b02a98408d34c6490698fc1d2783a612377fbe0fcc3d10b93704e5af59fcbd20d4fc2c0eb58d86e1bb6c9c4edf23e48

Download Submit
C:\Users\Public\Pictures\t7H93\8Zn14@f\v

Filesize
100KB

MD5
99414e907fb9fd177131792377e77912

SHA1
11e884fe1af08eedafa2ed02b6362dcc07f3ef88

SHA256
2be4372142ca5c3b2b1d3e2d61bb17b677570e52fad79b0eb6dc1a6f475438cc

SHA512
45966e34f73c4244b947b18ac1ab96838b71dce088f398ae5b88a8d529fcca843bf2c2defc4ae62cfe7883b2a7bfd4e789f722f7bcd4775382c87a1fb26f5561

Download Submit
memory/972-0-0x0000000180000000-0x0000000180033000-memory.dmp

Filesize
204KB

Download
memory/972-5-0x0000000180000000-0x0000000180033000-memory.dmp

Filesize
204KB

Download
memory/972-4-0x0000000180000000-0x0000000180033000-memory.dmp

Filesize
204KB

Download
memory/972-3-0x0000000180000000-0x0000000180033000-memory.dmp

Filesize
204KB

Download
memory/972-1-0x0000000180000000-0x0000000180033000-memory.dmp

Filesize
204KB

Download
memory/972-34-0x0000000180000000-0x0000000180033000-memory.dmp

Filesize
204KB

Download
memory/972-39-0x0000000180000000-0x0000000180033000-memory.dmp

Filesize
204KB

Download
memory/3216-35-0x0000000003140000-0x000000000319E000-memory.dmp

Filesize
376KB

Download
memory/3216-36-0x0000000003140000-0x000000000319E000-memory.dmp

Filesize
376KB

Download
memory/3216-37-0x0000000003140000-0x000000000319E000-memory.dmp

Filesize
376KB

Download
memory/3216-40-0x0000000003140000-0x000000000319E000-memory.dmp

Filesize
376KB

Download
memory/3216-33-0x0000000003140000-0x000000000319E000-memory.dmp

Filesize
376KB

Download
memory/3216-47-0x0000000003140000-0x000000000319E000-memory.dmp

Filesize
376KB

Download
memory/3216-48-0x0000000003140000-0x000000000319E000-memory.dmp

Filesize
376KB

Download
memory/3216-49-0x0000000003140000-0x000000000319E000-memory.dmp

Filesize
376KB

Download
memory/3216-50-0x0000000003140000-0x000000000319E000-memory.dmp

Filesize
376KB

Download
memory/3216-51-0x0000000003140000-0x000000000319E000-memory.dmp

Filesize
376KB

Download
memory/3216-54-0x0000000003140000-0x000000000319E000-memory.dmp

Filesize
376KB

Download