5b1c60e43cf34f5c5894438362d52fd8280b0b4061d70d171ba2dae40d764d84

Analysis

max time kernel
151s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
24/11/2023, 11:54

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General

Target

2024税务总局关于企业和个人所得税新政策 .exe
Size

203KB
MD5

01059b0a810a040b435a9bd540880d09
SHA1

a17dfd4c1a248ec2ebbffb53f62aecba71f32de0
SHA256

5b1c60e43cf34f5c5894438362d52fd8280b0b4061d70d171ba2dae40d764d84
SHA512

1181d2929f9c75140beab13f54dd3518930420446d433112b52a99fbca15b091bce0eba5e80bacb5e37cd753a102ae869a254ea34b9678cf0de31b0fe0a82cbd
SSDEEP

3072:DE+COyprOTLLvfkgev+oHvE0bMzhHkFTeVxLsc7bZJMs0yDpDkvhxBh:DzQprOTLbkgONvZ4hHD3Z7kvV

Score

10^/10

evasion trojan upx

Malware Config

Signatures

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	rM2Nc6r.exe

Downloads MZ/PE file
Modifies RDP port number used by Windows 1 TTPs

Remote Desktop Protocol
T1021.001

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3125601242-331447593-1512828465-1000\Control Panel\International\Geo\Nation	2024税务总局关于企业和个人所得税新政策 .exe

Executes dropped EXE 1 IoCs

pid	Process
3216	rM2Nc6r.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0006000000022ce0-15.dat	upx
behavioral2/files/0x0006000000022ce0-21.dat	upx
behavioral2/files/0x0006000000022ce0-23.dat	upx
behavioral2/memory/3216-22-0x0000000000400000-0x0000000000558000-memory.dmp	upx
behavioral2/memory/3216-64-0x0000000000400000-0x0000000000558000-memory.dmp	upx

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3880	4616	WerFault.exe	82

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rM2Nc6r.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	rM2Nc6r.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4616	2024税务总局关于企业和个人所得税新政策 .exe
4616	2024税务总局关于企业和个人所得税新政策 .exe
4616	2024税务总局关于企业和个人所得税新政策 .exe
4616	2024税务总局关于企业和个人所得税新政策 .exe
4616	2024税务总局关于企业和个人所得税新政策 .exe
4616	2024税务总局关于企业和个人所得税新政策 .exe
4616	2024税务总局关于企业和个人所得税新政策 .exe
4616	2024税务总局关于企业和个人所得税新政策 .exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe
3216	rM2Nc6r.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 3216	4616	2024税务总局关于企业和个人所得税新政策 .exe	93
PID 4616 wrote to memory of 3216	4616	2024税务总局关于企业和个人所得税新政策 .exe	93
PID 4616 wrote to memory of 3216	4616	2024税务总局关于企业和个人所得税新政策 .exe	93
PID 3216 wrote to memory of 3596	3216	rM2Nc6r.exe	98
PID 3216 wrote to memory of 3596	3216	rM2Nc6r.exe	98
PID 3216 wrote to memory of 3596	3216	rM2Nc6r.exe	98

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	rM2Nc6r.exe

C:\Users\Admin\AppData\Local\Temp\2024税务总局关于企业和个人所得税新政策 .exe
"C:\Users\Admin\AppData\Local\Temp\2024税务总局关于企业和个人所得税新政策 .exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Users\Admin\AppData\Roaming\e1kMZcKXr\rM2Nc6r.exe
  "C:\Users\Admin\AppData\Roaming\e1kMZcKXr\rM2Nc6r.exe"
  2⤵
  - UAC bypass
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:3216
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c echo.>c:\xxxx.ini
    3⤵
    PID:3596
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 1472
  2⤵
  - Program crash
  PID:3880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4616 -ip 4616
1⤵
PID:3848

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Remote Services

T1021

Remote Desktop Protocol

T1021.001

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\_ir_tu2_temp_0\IRIMG3.JPG

Filesize
6KB

MD5
e39405e85e09f64ccde0f59392317dd3

SHA1
9c76db4b3d8c7972e7995ecfb1e3c47ee94fd14b

SHA256
cfd9677e1c0e10b1507f520c4ecd40f68db78154c0d4e6563403d540f3bf829f

SHA512
6733f330145b48d23c023c664090f4f240e9bbeb8368b486c8ee8682ec6a930b73275e24075648d1aa7e01db1ec7b7e259286917a006ba9af8fb7cba3439070a

Download Submit
C:\Users\Admin\AppData\Local\Temp\_ir_tu2_temp_0\IRIMG4.JPG

Filesize
36KB

MD5
f6bf82a293b69aa5b47d4e2de305d45a

SHA1
4948716616d4bbe68be2b4c5bf95350402d3f96f

SHA256
6a9368cdd7b3ff9b590e206c3536569bc45c338966d0059784959f73fe6281e0

SHA512
edf0f3ee60a620cf886184c1014f38d0505aac9e3703d61d7074cfb27d6922f80e570d1a3891593606a09f1296a88c8770445761c11c390a99a5341ee56478aa

Download Submit
C:\Users\Admin\AppData\Roaming\e1kMZcKXr\Edge.jpg

Filesize
358KB

MD5
3c77248957db6f300076c95ea0f35d6c

SHA1
a5d0968189889eacc810defa8f1b1c1be29fe123

SHA256
37bd9e6fdf9f5830461fcd2efec8a33f5912bdd34cd6f620f544351eb817a4db

SHA512
98200a230c587cdef9dca80457982225b228acc6b6e09daf5b3f9a90d3378f7faedc4916049f3e5d18927d969884ce78165ba636ee4417dc3c324dedfb5aff2c

Download Submit
C:\Users\Admin\AppData\Roaming\e1kMZcKXr\edge.xml

Filesize
78KB

MD5
f126ab00979b9ffe006b4cdd33b36128

SHA1
905affb858b82e99ff581b0d93f1ff75d5482564

SHA256
ce75f55edb34369667b0f47592ad49608ce580808cdf0b2dbf4de30bf63fedc4

SHA512
b37807404ecfe9e6b7f6f49b2ca7899484c07f46d9d120136e5f58c737a74c053165b99eb50de11b971d51e2fa137e624571bcf7d29760bdf789acfc02007d40

Download Submit
C:\Users\Admin\AppData\Roaming\e1kMZcKXr\rM2Nc6r.dat

Filesize
132KB

MD5
42ba2bf20dc6cf3cf5454211450331bc

SHA1
a068cf4fa80f5e90ab445ff8c1032e157847002c

SHA256
5172cea75e95338d1870c1205614faf2f5ffe2d9baf385e28028c8467fb2041e

SHA512
d35c2deff604dd976c3099860bc210e25b4755899a3b664efadebec991cb3f51a3f08c34deee0c5280a66abb793b378fd33b7ef2e0c6ed416c6025b81beb9ccb

Download Submit
C:\Users\Admin\AppData\Roaming\e1kMZcKXr\rM2Nc6r.exe

Filesize
525KB

MD5
fc405097a8783a67ba3ca59e7a871dd0

SHA1
89ac6ae1bfde054f02bdab4329a2dfb91b1d9a8e

SHA256
3b682a7f9f14b8acf7afe255d59f907ee355c5d9615cce9054c4a642d59028c0

SHA512
d4565decd6df0dbb2c57a2c08f85158693f8afa99cb92845356fca73bec25e35431b7e1ca146086da3c663153fbc58b23f8beadae88ebd26235a627906c6b946

Download Submit
C:\Users\Admin\AppData\Roaming\e1kMZcKXr\rM2Nc6r.exe

Filesize
525KB

MD5
fc405097a8783a67ba3ca59e7a871dd0

SHA1
89ac6ae1bfde054f02bdab4329a2dfb91b1d9a8e

SHA256
3b682a7f9f14b8acf7afe255d59f907ee355c5d9615cce9054c4a642d59028c0

SHA512
d4565decd6df0dbb2c57a2c08f85158693f8afa99cb92845356fca73bec25e35431b7e1ca146086da3c663153fbc58b23f8beadae88ebd26235a627906c6b946

Download Submit
C:\Users\Admin\AppData\Roaming\e1kMZcKXr\rM2Nc6r.exe

Filesize
525KB

MD5
fc405097a8783a67ba3ca59e7a871dd0

SHA1
89ac6ae1bfde054f02bdab4329a2dfb91b1d9a8e

SHA256
3b682a7f9f14b8acf7afe255d59f907ee355c5d9615cce9054c4a642d59028c0

SHA512
d4565decd6df0dbb2c57a2c08f85158693f8afa99cb92845356fca73bec25e35431b7e1ca146086da3c663153fbc58b23f8beadae88ebd26235a627906c6b946

Download Submit
memory/3216-45-0x0000000002D60000-0x0000000002D61000-memory.dmp

Filesize
4KB

Download
memory/3216-47-0x00000000038B0000-0x00000000038C7000-memory.dmp

Filesize
92KB

Download
memory/3216-22-0x0000000000400000-0x0000000000558000-memory.dmp

Filesize
1.3MB

Download
memory/3216-50-0x0000000010000000-0x0000000010061000-memory.dmp

Filesize
388KB

Download
memory/3216-64-0x0000000000400000-0x0000000000558000-memory.dmp

Filesize
1.3MB

Download
memory/3216-66-0x00000000038B0000-0x00000000038C7000-memory.dmp

Filesize
92KB

Download
memory/4616-1-0x0000000010000000-0x0000000010018000-memory.dmp

Filesize
96KB

Download