webmonitor | 77732e74850050bb6f935945e510d32a0499d820fa1197752df8bd01c66e8210

General

Target

d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe
Size

962KB
MD5

d39da4595ca51a748ac33447965d80e3
SHA1

e7e0ec21e7cb1d67c906169e6e039d4b29c423c7
SHA256

77732e74850050bb6f935945e510d32a0499d820fa1197752df8bd01c66e8210
SHA512

620cf557f657213ff9f52b2939fdd689906f4b634a20210d3a6062802b25e30d3085c3b6bf0336c880fa8deedafc67f4daee2dd999f911d86184bda47d3ba178
SSDEEP

24576:0FsVd+29QFw53L5o3DVUYR35Xc32WBjshPQ:0FsqtFwaFi3JX

Score

10^/10

webmonitor backdoor discovery infostealer rat

Malware Config

Extracted

Family

webmonitor

C2

niiarmah.wm01.to:443

Attributes

config_key
4EcDHH7aWbl50LayUnuRlJWUXiKQWk0O
private_key
yvkn5wM8E
url_path
/recv5.php

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 6 IoCs

resource	yara_rule
behavioral2/memory/456-4-0x0000000000400000-0x00000000004F3000-memory.dmp	family_webmonitor
behavioral2/memory/456-3-0x0000000000400000-0x00000000004F3000-memory.dmp	family_webmonitor
behavioral2/memory/456-5-0x0000000000400000-0x00000000004F3000-memory.dmp	family_webmonitor
behavioral2/memory/456-7-0x0000000000400000-0x00000000004F3000-memory.dmp	family_webmonitor
behavioral2/memory/456-6-0x0000000000400000-0x00000000004F3000-memory.dmp	family_webmonitor
behavioral2/memory/456-11-0x0000000000400000-0x00000000004F3000-memory.dmp	family_webmonitor

Webmonitor family
webmonitor

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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4848 set thread context of 456	4848	d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe	83

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4848	d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
456	d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	456	d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	456	d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4848 wrote to memory of 456	4848	d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe	83
PID 4848 wrote to memory of 456	4848	d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe	83
PID 4848 wrote to memory of 456	4848	d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe	83
PID 4848 wrote to memory of 456	4848	d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe	83
PID 456 wrote to memory of 1008	456	d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe	87
PID 456 wrote to memory of 1008	456	d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe	87
PID 456 wrote to memory of 1008	456	d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe	87

C:\Users\Admin\AppData\Local\Temp\d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4848
- C:\Users\Admin\AppData\Local\Temp\d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\d39da4595ca51a748ac33447965d80e3_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:456
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\Mi1uq0muGFeBiNGB.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Mi1uq0muGFeBiNGB.bat

Filesize
204B

MD5
51686fbeeb90f5826f1a83f354145f7c

SHA1
c8c3de2ac8c2c46ddca59497cf505d8ca561d72d

SHA256
1196da0a446f8de90a9481f7f2bce5b127a716cc750ad2b22834e04971c89412

SHA512
fbd2f8a3815995df23e4455e6d78f56e5135215bf41e3ccee0809311d5093270f286f5698569d59d2e3dde6ed3d638472049e53407add1b999c0b0641a532678

Download Submit
memory/456-4-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download
memory/456-3-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download
memory/456-5-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download
memory/456-7-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download
memory/456-6-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download
memory/456-11-0x0000000000400000-0x00000000004F3000-memory.dmp

Filesize
972KB

Download
memory/456-12-0x0000000000870000-0x0000000000876000-memory.dmp

Filesize
24KB

Download
memory/4848-1-0x00000000004B0000-0x00000000005B0000-memory.dmp

Filesize
1024KB

Download
memory/4848-2-0x0000000000910000-0x0000000000912000-memory.dmp

Filesize
8KB

Download

Analysis

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