586f575caeac85799243b6818d791edb0458100503807926eab187fb6dda8880

General

Target

877a829a2e361307b4e08986c5b9c323_JaffaCakes118.exe
Size

1020KB
MD5

877a829a2e361307b4e08986c5b9c323
SHA1

4cd5ca6811af37797c84c3c9f9cd930e7c7dbb94
SHA256

586f575caeac85799243b6818d791edb0458100503807926eab187fb6dda8880
SHA512

8b22153b8bd0f088508f5d4151cf843b88b020b41e2161d5bd04c989ade23300986543f8a03b78c15986825e4a473293fa4107633039ab148514954c1d5213e6
SSDEEP

24576:mBS3Xvhd1m8wFnnItoyzNqogUnrsGYpS:mKfhfNZoONqTWrsGYpS

Score

9^/10

collection credential_access discovery spyware stealer upx

Malware Config

Signatures

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Checks computer location settings 2 TTPs 2 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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	877a829a2e361307b4e08986c5b9c323_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	Antivirus-Updater.exe

Executes dropped EXE 1 IoCs

pid	Process
2516	Antivirus-Updater.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1856-0-0x0000000000400000-0x00000000006B6000-memory.dmp	upx
behavioral2/files/0x0009000000023468-6.dat	upx
behavioral2/memory/1856-11-0x0000000000400000-0x00000000006B6000-memory.dmp	upx
behavioral2/memory/2516-18-0x0000000010000000-0x000000001005A000-memory.dmp	upx
behavioral2/memory/2516-19-0x0000000010000000-0x000000001005A000-memory.dmp	upx
behavioral2/memory/2516-22-0x0000000000400000-0x00000000006B6000-memory.dmp	upx

Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	Antivirus-Updater.exe

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	Antivirus-Updater.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	877a829a2e361307b4e08986c5b9c323_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2516	Antivirus-Updater.exe
2516	Antivirus-Updater.exe
2516	Antivirus-Updater.exe
2516	Antivirus-Updater.exe
2516	Antivirus-Updater.exe
2516	Antivirus-Updater.exe
2516	Antivirus-Updater.exe
2516	Antivirus-Updater.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1856 wrote to memory of 2516	1856	877a829a2e361307b4e08986c5b9c323_JaffaCakes118.exe	92
PID 1856 wrote to memory of 2516	1856	877a829a2e361307b4e08986c5b9c323_JaffaCakes118.exe	92
PID 1856 wrote to memory of 2516	1856	877a829a2e361307b4e08986c5b9c323_JaffaCakes118.exe	92
PID 2516 wrote to memory of 3404	2516	Antivirus-Updater.exe	93
PID 2516 wrote to memory of 3404	2516	Antivirus-Updater.exe	93
PID 2516 wrote to memory of 3404	2516	Antivirus-Updater.exe	93

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	Antivirus-Updater.exe

C:\Users\Admin\AppData\Local\Temp\877a829a2e361307b4e08986c5b9c323_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\877a829a2e361307b4e08986c5b9c323_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1856
- C:\Users\Admin\AppData\Roaming\AV-UPDATES\Antivirus-Updater.exe
  "C:\Users\Admin\AppData\Roaming\AV-UPDATES\Antivirus-Updater.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  - outlook_win_path
  PID:2516
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\Host.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3404

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\AV-UPDATES\Antivirus-Updater.exe

Filesize
1020KB

MD5
877a829a2e361307b4e08986c5b9c323

SHA1
4cd5ca6811af37797c84c3c9f9cd930e7c7dbb94

SHA256
586f575caeac85799243b6818d791edb0458100503807926eab187fb6dda8880

SHA512
8b22153b8bd0f088508f5d4151cf843b88b020b41e2161d5bd04c989ade23300986543f8a03b78c15986825e4a473293fa4107633039ab148514954c1d5213e6

Download Submit
memory/1856-0-0x0000000000400000-0x00000000006B6000-memory.dmp

Filesize
2.7MB

Download
memory/1856-1-0x00000000007B0000-0x00000000007B1000-memory.dmp

Filesize
4KB

Download
memory/1856-11-0x0000000000400000-0x00000000006B6000-memory.dmp

Filesize
2.7MB

Download
memory/2516-13-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/2516-18-0x0000000010000000-0x000000001005A000-memory.dmp

Filesize
360KB

Download
memory/2516-19-0x0000000010000000-0x000000001005A000-memory.dmp

Filesize
360KB

Download
memory/2516-22-0x0000000000400000-0x00000000006B6000-memory.dmp

Filesize
2.7MB

Download

Analysis

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