8bebd54edfffa8cbd4769982178f1cb04df9b89eaaa8ba972c985a65668e1897

Analysis

max time kernel
140s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09-08-2024 23:43

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General

Target

8406c8b731646404dd9613dddb972cbb_JaffaCakes118.exe
Size

771KB
MD5

8406c8b731646404dd9613dddb972cbb
SHA1

b310d1a6ca066e9d0c212130933aa48c4ed40b9d
SHA256

8bebd54edfffa8cbd4769982178f1cb04df9b89eaaa8ba972c985a65668e1897
SHA512

2e0630b31a5485bbd9061bdf25410b1e72d037b842ce94459bb4a2209bb0944167f5f00fdcbd1d2fd9cd371c60b9877902f8071d202541381f942960f01741d8
SSDEEP

24576:q3nZqfbhTY+xfLKxVSZKrVf3B7YG01hX85WnBYHATuM68a:qGxfLKxVyqVfx7euYB+AT08a

Score

7^/10

discovery upx

Malware Config

Signatures

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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	8406c8b731646404dd9613dddb972cbb_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
916	5.EXE

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0007000000023440-6.dat	upx
behavioral2/memory/916-14-0x0000000000400000-0x00000000004A9000-memory.dmp	upx
behavioral2/memory/916-16-0x0000000000400000-0x00000000004A9000-memory.dmp	upx

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\%system%\5.exe	8406c8b731646404dd9613dddb972cbb_JaffaCakes118.exe
File opened for modification	C:\Program Files (x86)\%system%\5.exe	8406c8b731646404dd9613dddb972cbb_JaffaCakes118.exe
File opened for modification	C:\Program Files (x86)\%system%	8406c8b731646404dd9613dddb972cbb_JaffaCakes118.exe
File created	C:\Program Files (x86)\%system%\__tmp_rar_sfx_access_check_240632500	8406c8b731646404dd9613dddb972cbb_JaffaCakes118.exe
File created	C:\Program Files (x86)\%system%\aaa.jpg	8406c8b731646404dd9613dddb972cbb_JaffaCakes118.exe
File opened for modification	C:\Program Files (x86)\%system%\aaa.jpg	8406c8b731646404dd9613dddb972cbb_JaffaCakes118.exe

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
1904	916	WerFault.exe	85

System Location Discovery: System Language Discovery 1 TTPs 2 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	8406c8b731646404dd9613dddb972cbb_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1492 wrote to memory of 916	1492	8406c8b731646404dd9613dddb972cbb_JaffaCakes118.exe	85
PID 1492 wrote to memory of 916	1492	8406c8b731646404dd9613dddb972cbb_JaffaCakes118.exe	85
PID 1492 wrote to memory of 916	1492	8406c8b731646404dd9613dddb972cbb_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\8406c8b731646404dd9613dddb972cbb_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8406c8b731646404dd9613dddb972cbb_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1492
- C:\Program Files (x86)\%system%\5.EXE
  "C:\Program Files (x86)\%system%\5.EXE"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:916
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 916 -s 544
    3⤵
    - Program crash
    PID:1904

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 916 -ip 916
1⤵
PID:2924

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\%system%\5.exe

Filesize
591KB

MD5
fab4606dfa5e3ffd33c436c53c1e07b6

SHA1
70bd8e2dde60b1d13bba0e4309cf98c0ba10806c

SHA256
a4a5107092f4ef640a2dcf0dc5cc8a8e6c161b1f9bbc272d06c70b38556e043a

SHA512
db692b94d207cc6669ed14c534f3ad309fc5ce95e1dc4336d377a929a027a8c30095c60f91ef92d274f8340adf3785ad226cadf606e630f833587ddefd47f53d

Download Submit
memory/916-14-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/916-16-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

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