8981c157e64e92085adf91be032b36d9780bb5f2b10c13e75cc6ae4acb4b0035

Analysis

max time kernel
142s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
29-12-2023 21:03

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General

Target

03f37b7e3e52e10b63f67ea217130f34.exe
Size

39KB
MD5

03f37b7e3e52e10b63f67ea217130f34
SHA1

a98967f9160270844c869227b1ba9ac8c23ad893
SHA256

8981c157e64e92085adf91be032b36d9780bb5f2b10c13e75cc6ae4acb4b0035
SHA512

32697c9c535ff5a18b0c22f89ec8611f8bbfbbebfc61f7c19bfecd4cc28bb9261acb51f434ce775e7e7e9f88346ce87e854b7ac18f58db5e3434b1a416699c43
SSDEEP

768:lyLH7TlCuqtXF5rg1QAmdDUJKfz/XZ/ABI0MMNtjqTpifw5o:l8lCuWXbrnfdAUXZ/AiWLqTpifN

Score

8^/10

persistence upx

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	03f37b7e3e52e10b63f67ea217130f34.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\mjte = "C:\\Users\\Admin\\AppData\\Local\\Temp\\zly0i.exe"	03f37b7e3e52e10b63f67ea217130f34.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	zly0i.exe

Executes dropped EXE 2 IoCs

pid	Process
1324	zly0i.exe
1472	zly0i.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3220-0-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/files/0x0006000000023211-6.dat	upx
behavioral2/memory/3220-15-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/memory/1324-21-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/memory/1472-22-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/memory/1472-27-0x0000000000400000-0x0000000000425000-memory.dmp	upx
behavioral2/memory/1324-30-0x0000000000400000-0x0000000000425000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\GrpConv = "grpconv -o"	Rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\vnnl3.log	zly0i.exe

Launches sc.exe 6 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
828	sc.exe
2212	sc.exe
944	sc.exe
3064	sc.exe
5032	sc.exe
4904	sc.exe

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	runonce.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	runonce.exe

Runs net.exe

Suspicious use of SetWindowsHookEx 9 IoCs

pid	Process
3220	03f37b7e3e52e10b63f67ea217130f34.exe
3220	03f37b7e3e52e10b63f67ea217130f34.exe
3220	03f37b7e3e52e10b63f67ea217130f34.exe
1324	zly0i.exe
1324	zly0i.exe
1324	zly0i.exe
1472	zly0i.exe
1472	zly0i.exe
1472	zly0i.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3220 wrote to memory of 4504	3220	03f37b7e3e52e10b63f67ea217130f34.exe	90
PID 3220 wrote to memory of 4504	3220	03f37b7e3e52e10b63f67ea217130f34.exe	90
PID 3220 wrote to memory of 4504	3220	03f37b7e3e52e10b63f67ea217130f34.exe	90
PID 3220 wrote to memory of 2212	3220	03f37b7e3e52e10b63f67ea217130f34.exe	91
PID 3220 wrote to memory of 2212	3220	03f37b7e3e52e10b63f67ea217130f34.exe	91
PID 3220 wrote to memory of 2212	3220	03f37b7e3e52e10b63f67ea217130f34.exe	91
PID 3220 wrote to memory of 3024	3220	03f37b7e3e52e10b63f67ea217130f34.exe	96
PID 3220 wrote to memory of 3024	3220	03f37b7e3e52e10b63f67ea217130f34.exe	96
PID 3220 wrote to memory of 3024	3220	03f37b7e3e52e10b63f67ea217130f34.exe	96
PID 3220 wrote to memory of 944	3220	03f37b7e3e52e10b63f67ea217130f34.exe	94
PID 3220 wrote to memory of 944	3220	03f37b7e3e52e10b63f67ea217130f34.exe	94
PID 3220 wrote to memory of 944	3220	03f37b7e3e52e10b63f67ea217130f34.exe	94
PID 3220 wrote to memory of 1324	3220	03f37b7e3e52e10b63f67ea217130f34.exe	98
PID 3220 wrote to memory of 1324	3220	03f37b7e3e52e10b63f67ea217130f34.exe	98
PID 3220 wrote to memory of 1324	3220	03f37b7e3e52e10b63f67ea217130f34.exe	98
PID 4504 wrote to memory of 1196	4504	net.exe	99
PID 4504 wrote to memory of 1196	4504	net.exe	99
PID 4504 wrote to memory of 1196	4504	net.exe	99
PID 3024 wrote to memory of 4940	3024	net.exe	100
PID 3024 wrote to memory of 4940	3024	net.exe	100
PID 3024 wrote to memory of 4940	3024	net.exe	100
PID 3220 wrote to memory of 3956	3220	03f37b7e3e52e10b63f67ea217130f34.exe	101
PID 3220 wrote to memory of 3956	3220	03f37b7e3e52e10b63f67ea217130f34.exe	101
PID 3220 wrote to memory of 3956	3220	03f37b7e3e52e10b63f67ea217130f34.exe	101
PID 3956 wrote to memory of 4212	3956	Rundll32.exe	103
PID 3956 wrote to memory of 4212	3956	Rundll32.exe	103
PID 3956 wrote to memory of 4212	3956	Rundll32.exe	103
PID 3220 wrote to memory of 3932	3220	03f37b7e3e52e10b63f67ea217130f34.exe	102
PID 3220 wrote to memory of 3932	3220	03f37b7e3e52e10b63f67ea217130f34.exe	102
PID 3220 wrote to memory of 3932	3220	03f37b7e3e52e10b63f67ea217130f34.exe	102
PID 1324 wrote to memory of 3328	1324	zly0i.exe	106
PID 1324 wrote to memory of 3328	1324	zly0i.exe	106
PID 1324 wrote to memory of 3328	1324	zly0i.exe	106
PID 1324 wrote to memory of 3064	1324	zly0i.exe	105
PID 1324 wrote to memory of 3064	1324	zly0i.exe	105
PID 1324 wrote to memory of 3064	1324	zly0i.exe	105
PID 1324 wrote to memory of 1128	1324	zly0i.exe	110
PID 1324 wrote to memory of 1128	1324	zly0i.exe	110
PID 1324 wrote to memory of 1128	1324	zly0i.exe	110
PID 1324 wrote to memory of 5032	1324	zly0i.exe	109
PID 1324 wrote to memory of 5032	1324	zly0i.exe	109
PID 1324 wrote to memory of 5032	1324	zly0i.exe	109
PID 1324 wrote to memory of 1472	1324	zly0i.exe	107
PID 1324 wrote to memory of 1472	1324	zly0i.exe	107
PID 1324 wrote to memory of 1472	1324	zly0i.exe	107
PID 3328 wrote to memory of 2848	3328	net.exe	114
PID 3328 wrote to memory of 2848	3328	net.exe	114
PID 3328 wrote to memory of 2848	3328	net.exe	114
PID 1128 wrote to memory of 2920	1128	net.exe	115
PID 1128 wrote to memory of 2920	1128	net.exe	115
PID 1128 wrote to memory of 2920	1128	net.exe	115
PID 1472 wrote to memory of 3620	1472	zly0i.exe	116
PID 1472 wrote to memory of 3620	1472	zly0i.exe	116
PID 1472 wrote to memory of 3620	1472	zly0i.exe	116
PID 1472 wrote to memory of 4904	1472	zly0i.exe	117
PID 1472 wrote to memory of 4904	1472	zly0i.exe	117
PID 1472 wrote to memory of 4904	1472	zly0i.exe	117
PID 1472 wrote to memory of 2228	1472	zly0i.exe	118
PID 1472 wrote to memory of 2228	1472	zly0i.exe	118
PID 1472 wrote to memory of 2228	1472	zly0i.exe	118
PID 1472 wrote to memory of 828	1472	zly0i.exe	119
PID 1472 wrote to memory of 828	1472	zly0i.exe	119
PID 1472 wrote to memory of 828	1472	zly0i.exe	119
PID 4212 wrote to memory of 2088	4212	runonce.exe	124

C:\Users\Admin\AppData\Local\Temp\03f37b7e3e52e10b63f67ea217130f34.exe
"C:\Users\Admin\AppData\Local\Temp\03f37b7e3e52e10b63f67ea217130f34.exe"
1⤵
- Adds policy Run key to start application
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3220
- C:\Windows\SysWOW64\net.exe
  net.exe stop "Security Center"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4504
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "Security Center"
    3⤵
    PID:1196
- C:\Windows\SysWOW64\sc.exe
  sc config wscsvc start= DISABLED
  2⤵
  - Launches sc.exe
  PID:2212
- C:\Windows\SysWOW64\sc.exe
  sc config SharedAccess start= DISABLED
  2⤵
  - Launches sc.exe
  PID:944
- C:\Windows\SysWOW64\net.exe
  net.exe stop "Windows Firewall/Internet Connection Sharing (ICS)"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3024
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop "Windows Firewall/Internet Connection Sharing (ICS)"
    3⤵
    PID:4940
- C:\Users\Admin\AppData\Local\Temp\zly0i.exe
  C:\Users\Admin\AppData\Local\Temp\zly0i.exe
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1324
- - C:\Windows\SysWOW64\sc.exe
    sc config wscsvc start= DISABLED
    3⤵
    - Launches sc.exe
    PID:3064
- - C:\Windows\SysWOW64\net.exe
    net.exe stop "Security Center"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3328
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "Security Center"
      4⤵
      PID:2848
- - C:\Users\Admin\AppData\Local\Temp\zly0i.exe
    C:\Users\Admin\AppData\Local\Temp\zly0i.exe -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
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1472
  - - C:\Windows\SysWOW64\net.exe
      net.exe stop "Security Center"
      4⤵
      PID:3620
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 stop "Security Center"
        5⤵
        
        PID:3400
  - - C:\Windows\SysWOW64\sc.exe
      sc config wscsvc start= DISABLED
      4⤵
      Launches sc.exe
      PID:4904
  - - C:\Windows\SysWOW64\net.exe
      net.exe stop "Windows Firewall/Internet Connection Sharing (ICS)"
      4⤵
      PID:2228
    - - C:\Windows\SysWOW64\net1.exe
        
        C:\Windows\system32\net1 stop "Windows Firewall/Internet Connection Sharing (ICS)"
        5⤵
        
        PID:980
  - - C:\Windows\SysWOW64\sc.exe
      sc config SharedAccess start= DISABLED
      4⤵
      Launches sc.exe
      PID:828
- - C:\Windows\SysWOW64\sc.exe
    sc config SharedAccess start= DISABLED
    3⤵
    - Launches sc.exe
    PID:5032
- - C:\Windows\SysWOW64\net.exe
    net.exe stop "Windows Firewall/Internet Connection Sharing (ICS)"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1128
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop "Windows Firewall/Internet Connection Sharing (ICS)"
      4⤵
      PID:2920
- C:\Windows\SysWOW64\Rundll32.exe
  Rundll32.exe setupapi,InstallHinfSection DefaultInstall 128 C:\Users\Admin\AppData\Local\Temp\mdinstall.inf
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:3956
- - C:\Windows\SysWOW64\runonce.exe
    "C:\Windows\system32\runonce.exe" -r
    3⤵
    - Checks processor information in registry
    - Suspicious use of WriteProcessMemory
    PID:4212
  - - C:\Windows\SysWOW64\grpconv.exe
      "C:\Windows\System32\grpconv.exe" -o
      4⤵
      PID:2088
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\rjxqku1pp.bat
  2⤵
  PID:3932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\mdinstall.inf

Filesize
413B

MD5
ce1f2d7c8e36f3c085a5d281b9ebeb2f

SHA1
bbbfae948d625afe50f66f34282bda3974cfdce5

SHA256
312239a5c6333e6d1e8ba9f0e81856c37347be0f21d194741ae1d25538cd130c

SHA512
89f69b88bdfb391f58abaefbbae7e393571709c0ea6a268794c035200674ad3a8615a65944373559aead87e8d5ab09f334e2b1563c1bde912aa26a485b76357e

Download Submit
C:\Users\Admin\AppData\Local\Temp\rjxqku1pp.bat

Filesize
190B

MD5
06a64df409ba42664fa09605c8398dc6

SHA1
a69aa15d4be29366d136a9e363b269988e21945b

SHA256
b6176f45a01338eacaa8fe923ba6c53ccdd7013cf4921b17814e3e43b6d61592

SHA512
115927c40b240588bed1859600a64612c32819dd97e84ed8526da2c6b4d6ac78043897679395f15dbb2cf4adffbea730f6d5228e711d50f96459c5343a2ce23a

Download Submit
C:\Users\Admin\AppData\Local\Temp\zly0i.exe

Filesize
39KB

MD5
03f37b7e3e52e10b63f67ea217130f34

SHA1
a98967f9160270844c869227b1ba9ac8c23ad893

SHA256
8981c157e64e92085adf91be032b36d9780bb5f2b10c13e75cc6ae4acb4b0035

SHA512
32697c9c535ff5a18b0c22f89ec8611f8bbfbbebfc61f7c19bfecd4cc28bb9261acb51f434ce775e7e7e9f88346ce87e854b7ac18f58db5e3434b1a416699c43

Download Submit
memory/1324-21-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1324-30-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1472-22-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1472-27-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3220-0-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3220-15-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads