webmonitor | 5bc55a28df511497fef465f3127424ec2ef9dc6f0ba465e3491156102a6b01a4

Resubmissions

23-09-2021 13:58

210923-raaz9aefc4 8

22-08-2021 12:57

210822-9mjev45vne 10

Analysis

max time kernel
303s
max time network
318s
platform
windows10_x64
resource
win10v20210408
submitted
22-08-2021 12:57

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General

Target

dvdfab_player_6115.exe
Size

102.3MB
MD5

12880e15e937216cb83b7a2cb328909e
SHA1

56fec932ebad7b73b1629bd510416dc33a186ea3
SHA256

fcbf364dfa1211e904b23c5fbd6bb67159d4e4f56777f0445977e38b6d49777f
SHA512

2d63cc5db2eb219c4349e2fdf2436b334779b50b6184c8e54ed65fba0fb803c74dfe0f19f9e404b53511df0d249b8adbd3646dd8f7404b5d9fbb67ab5c42d87d

Score

10^/10

webmonitor backdoor infostealer persistence rat suricata upx

Malware Config

Signatures

RevcodeRat, WebMonitorRat
WebMonitor is a remote access tool that you can use from any browser access to control, and monitor your phones, or PCs.
backdoor rat infostealer webmonitor

WebMonitor Payload 1 IoCs

resource	yara_rule
behavioral1/memory/1284-161-0x00000000005F5A70-mapping.dmp	family_webmonitor

suricata: ET MALWARE WebMonitor/RevCode RAT CnC Domain in DNS Lookup
suricata: ET MALWARE WebMonitor/RevCode RAT CnC Domain in DNS Lookup
suricata

Executes dropped EXE 3 IoCs

pid	Process
200	keygen.exe
2944	keygen.exe
200	keygen.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3460-121-0x0000000000400000-0x00000000005F7000-memory.dmp	upx
behavioral1/memory/3460-125-0x0000000000400000-0x00000000005F7000-memory.dmp	upx
behavioral1/memory/1564-131-0x0000000000400000-0x000000000041B000-memory.dmp	upx
behavioral1/memory/1564-147-0x0000000000400000-0x000000000041B000-memory.dmp	upx

Adds Run key to start application 2 TTPs 14 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WM-f6ff = "C:\\Users\\Admin\\AppData\\Roaming\\WM-f6ff.exe\uf800"	AppLaunch.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\WM-f6ff = "C:\\Users\\Admin\\AppData\\Roaming\\WM-f6ff.exe騀"	AppLaunch.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\WM-f6ff = "C:\\Users\\Admin\\AppData\\Roaming\\WM-f6ff.exe\uab00"	AppLaunch.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\WM-f6ff = "C:\\Users\\Admin\\AppData\\Roaming\\WM-f6ff.exe茀"	AppLaunch.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WM-f6ff = "C:\\Users\\Admin\\AppData\\Roaming\\WM-f6ff.exe\uff00"	AppLaunch.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\WM-f6ff = "C:\\Users\\Admin\\AppData\\Roaming\\WM-f6ff.exe\u2000"	AppLaunch.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WM-f6ff = "C:\\Users\\Admin\\AppData\\Roaming\\WM-f6ff.exe\u2000"	AppLaunch.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\WM-f6ff = "C:\\Users\\Admin\\AppData\\Roaming\\WM-f6ff.exe\uf800"	AppLaunch.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WM-f6ff = "C:\\Users\\Admin\\AppData\\Roaming\\WM-f6ff.exe騀"	AppLaunch.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\WM-f6ff = "C:\\Users\\Admin\\AppData\\Roaming\\WM-f6ff.exe"	AppLaunch.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WM-f6ff = "C:\\Users\\Admin\\AppData\\Roaming\\WM-f6ff.exe"	AppLaunch.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WM-f6ff = "C:\\Users\\Admin\\AppData\\Roaming\\WM-f6ff.exe\uab00"	AppLaunch.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WM-f6ff = "C:\\Users\\Admin\\AppData\\Roaming\\WM-f6ff.exe茀"	AppLaunch.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\WM-f6ff = "C:\\Users\\Admin\\AppData\\Roaming\\WM-f6ff.exe\uff00"	AppLaunch.exe

Suspicious use of SetThreadContext 8 IoCs

description	pid	Process	procid_target
PID 3736 set thread context of 3460	3736	dvdfab_player_6115.exe	78
PID 3460 set thread context of 1564	3460	AppLaunch.exe	82
PID 3460 set thread context of 352	3460	AppLaunch.exe	83
PID 3460 set thread context of 2188	3460	AppLaunch.exe	86
PID 3460 set thread context of 1872	3460	AppLaunch.exe	87
PID 200 set thread context of 1284	200	keygen.exe	100
PID 2944 set thread context of 3148	2944	keygen.exe	106
PID 200 set thread context of 3952	200	keygen.exe	111

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

System Information Discovery
T1082

Program crash 3 IoCs

pid	pid_target	Process	procid_target
208	200	WerFault.exe	97
1560	2944	WerFault.exe	103
2044	200	WerFault.exe	108

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
2256	schtasks.exe

Suspicious behavior: EnumeratesProcesses 48 IoCs

pid	Process
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
208	WerFault.exe
1560	WerFault.exe
1560	WerFault.exe
1560	WerFault.exe
1560	WerFault.exe
1560	WerFault.exe
1560	WerFault.exe
1560	WerFault.exe
1560	WerFault.exe
1560	WerFault.exe
1560	WerFault.exe
1560	WerFault.exe
1560	WerFault.exe
1560	WerFault.exe
1560	WerFault.exe
1560	WerFault.exe
1560	WerFault.exe
2044	WerFault.exe
2044	WerFault.exe
2044	WerFault.exe
2044	WerFault.exe
2044	WerFault.exe
2044	WerFault.exe
2044	WerFault.exe
2044	WerFault.exe
2044	WerFault.exe
2044	WerFault.exe
2044	WerFault.exe
2044	WerFault.exe
2044	WerFault.exe
2044	WerFault.exe
2044	WerFault.exe
2044	WerFault.exe

Suspicious use of AdjustPrivilegeToken 17 IoCs

description	pid	Process
Token: SeDebugPrivilege	3736	dvdfab_player_6115.exe
Token: SeDebugPrivilege	3460	AppLaunch.exe
Token: SeShutdownPrivilege	3460	AppLaunch.exe
Token: SeCreatePagefilePrivilege	3460	AppLaunch.exe
Token: SeDebugPrivilege	200	keygen.exe
Token: SeDebugPrivilege	1284	AppLaunch.exe
Token: SeShutdownPrivilege	1284	AppLaunch.exe
Token: SeCreatePagefilePrivilege	1284	AppLaunch.exe
Token: SeRestorePrivilege	208	WerFault.exe
Token: SeBackupPrivilege	208	WerFault.exe
Token: SeDebugPrivilege	208	WerFault.exe
Token: SeDebugPrivilege	2944	keygen.exe
Token: SeDebugPrivilege	1560	WerFault.exe
Token: SeShutdownPrivilege	3148	AppLaunch.exe
Token: SeCreatePagefilePrivilege	3148	AppLaunch.exe
Token: SeDebugPrivilege	200	keygen.exe
Token: SeDebugPrivilege	2044	WerFault.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3460	AppLaunch.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3736 wrote to memory of 3936	3736	dvdfab_player_6115.exe	76
PID 3736 wrote to memory of 3936	3736	dvdfab_player_6115.exe	76
PID 3736 wrote to memory of 3936	3736	dvdfab_player_6115.exe	76
PID 3736 wrote to memory of 3460	3736	dvdfab_player_6115.exe	78
PID 3736 wrote to memory of 3460	3736	dvdfab_player_6115.exe	78
PID 3736 wrote to memory of 3460	3736	dvdfab_player_6115.exe	78
PID 3736 wrote to memory of 3460	3736	dvdfab_player_6115.exe	78
PID 3736 wrote to memory of 3460	3736	dvdfab_player_6115.exe	78
PID 3736 wrote to memory of 3460	3736	dvdfab_player_6115.exe	78
PID 3736 wrote to memory of 3460	3736	dvdfab_player_6115.exe	78
PID 3460 wrote to memory of 1564	3460	AppLaunch.exe	82
PID 3460 wrote to memory of 1564	3460	AppLaunch.exe	82
PID 3460 wrote to memory of 1564	3460	AppLaunch.exe	82
PID 3460 wrote to memory of 1564	3460	AppLaunch.exe	82
PID 3460 wrote to memory of 1564	3460	AppLaunch.exe	82
PID 3460 wrote to memory of 1564	3460	AppLaunch.exe	82
PID 3460 wrote to memory of 1564	3460	AppLaunch.exe	82
PID 3460 wrote to memory of 1564	3460	AppLaunch.exe	82
PID 3460 wrote to memory of 352	3460	AppLaunch.exe	83
PID 3460 wrote to memory of 352	3460	AppLaunch.exe	83
PID 3460 wrote to memory of 352	3460	AppLaunch.exe	83
PID 3460 wrote to memory of 352	3460	AppLaunch.exe	83
PID 3460 wrote to memory of 352	3460	AppLaunch.exe	83
PID 3460 wrote to memory of 352	3460	AppLaunch.exe	83
PID 3460 wrote to memory of 352	3460	AppLaunch.exe	83
PID 3460 wrote to memory of 352	3460	AppLaunch.exe	83
PID 3460 wrote to memory of 2188	3460	AppLaunch.exe	86
PID 3460 wrote to memory of 2188	3460	AppLaunch.exe	86
PID 3460 wrote to memory of 2188	3460	AppLaunch.exe	86
PID 3460 wrote to memory of 2188	3460	AppLaunch.exe	86
PID 3460 wrote to memory of 2188	3460	AppLaunch.exe	86
PID 3460 wrote to memory of 2188	3460	AppLaunch.exe	86
PID 3460 wrote to memory of 2188	3460	AppLaunch.exe	86
PID 3460 wrote to memory of 2188	3460	AppLaunch.exe	86
PID 3460 wrote to memory of 1872	3460	AppLaunch.exe	87
PID 3460 wrote to memory of 1872	3460	AppLaunch.exe	87
PID 3460 wrote to memory of 1872	3460	AppLaunch.exe	87
PID 3460 wrote to memory of 1872	3460	AppLaunch.exe	87
PID 3460 wrote to memory of 1872	3460	AppLaunch.exe	87
PID 3460 wrote to memory of 1872	3460	AppLaunch.exe	87
PID 3460 wrote to memory of 1872	3460	AppLaunch.exe	87
PID 3460 wrote to memory of 1872	3460	AppLaunch.exe	87
PID 3736 wrote to memory of 1512	3736	dvdfab_player_6115.exe	90
PID 3736 wrote to memory of 1512	3736	dvdfab_player_6115.exe	90
PID 3736 wrote to memory of 1512	3736	dvdfab_player_6115.exe	90
PID 3736 wrote to memory of 2952	3736	dvdfab_player_6115.exe	92
PID 3736 wrote to memory of 2952	3736	dvdfab_player_6115.exe	92
PID 3736 wrote to memory of 2952	3736	dvdfab_player_6115.exe	92
PID 1512 wrote to memory of 2256	1512	cmd.exe	94
PID 1512 wrote to memory of 2256	1512	cmd.exe	94
PID 1512 wrote to memory of 2256	1512	cmd.exe	94
PID 200 wrote to memory of 1612	200	keygen.exe	98
PID 200 wrote to memory of 1612	200	keygen.exe	98
PID 200 wrote to memory of 1612	200	keygen.exe	98
PID 200 wrote to memory of 1284	200	keygen.exe	100
PID 200 wrote to memory of 1284	200	keygen.exe	100
PID 200 wrote to memory of 1284	200	keygen.exe	100
PID 200 wrote to memory of 1284	200	keygen.exe	100
PID 200 wrote to memory of 1284	200	keygen.exe	100
PID 200 wrote to memory of 1284	200	keygen.exe	100
PID 200 wrote to memory of 1284	200	keygen.exe	100
PID 2944 wrote to memory of 3272	2944	keygen.exe	104
PID 2944 wrote to memory of 3272	2944	keygen.exe	104
PID 2944 wrote to memory of 3272	2944	keygen.exe	104

C:\Users\Admin\AppData\Local\Temp\dvdfab_player_6115.exe
"C:\Users\Admin\AppData\Local\Temp\dvdfab_player_6115.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3736
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c
  2⤵
  PID:3936
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3460
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    -d 56007 TCP
    3⤵
    PID:1564
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    -a 10.10.0.21 56007 56007 TCP
    3⤵
    PID:352
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    -d 56008 TCP
    3⤵
    PID:2188
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    -a 10.10.0.21 56008 56008 TCP
    3⤵
    PID:1872
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Local\Temp\keygen\keygen.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1512
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Local\Temp\keygen\keygen.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:2256
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\dvdfab_player_6115.exe" "C:\Users\Admin\AppData\Local\Temp\keygen\keygen.exe"
  2⤵
  PID:2952

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:3032

C:\Users\Admin\AppData\Local\Temp\keygen\keygen.exe
C:\Users\Admin\AppData\Local\Temp\keygen\keygen.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:200
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c
  2⤵
  PID:1612
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1284
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 200 -s 1936
  2⤵
  - Program crash
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:208

C:\Users\Admin\AppData\Local\Temp\keygen\keygen.exe
C:\Users\Admin\AppData\Local\Temp\keygen\keygen.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2944
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c
  2⤵
  PID:3272
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3148
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2944 -s 1908
  2⤵
  - Program crash
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1560

C:\Users\Admin\AppData\Local\Temp\keygen\keygen.exe
C:\Users\Admin\AppData\Local\Temp\keygen\keygen.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
PID:200
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c
  2⤵
  PID:2968
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
  2⤵
  PID:3952
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 200 -s 1400
  2⤵
  - Program crash
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2044

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/200-190-0x000000000AED0000-0x000000000AED1000-memory.dmp

Filesize
4KB

Download
memory/200-157-0x000000000B220000-0x000000000B221000-memory.dmp

Filesize
4KB

Download
memory/200-153-0x0000000000340000-0x0000000000341000-memory.dmp

Filesize
4KB

Download
memory/1564-131-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1564-147-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2944-173-0x000000000B410000-0x000000000B411000-memory.dmp

Filesize
4KB

Download
memory/3460-121-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/3460-125-0x0000000000400000-0x00000000005F7000-memory.dmp

Filesize
2.0MB

Download
memory/3460-130-0x0000000007330000-0x0000000008330000-memory.dmp

Filesize
16.0MB

Download
memory/3736-119-0x000000000BDC0000-0x000000000BDC1000-memory.dmp

Filesize
4KB

Download
memory/3736-118-0x000000000BA60000-0x000000000BA61000-memory.dmp

Filesize
4KB

Download
memory/3736-114-0x0000000000B10000-0x0000000000B11000-memory.dmp

Filesize
4KB

Download
memory/3736-117-0x000000000B9C0000-0x000000000B9C1000-memory.dmp

Filesize
4KB

Download
memory/3736-116-0x000000000BF70000-0x000000000BF71000-memory.dmp

Filesize
4KB

Download