578b964e6dd79aa038121023031cb9bc1d6ea35d17c2a711db21b30c0699e4e4

Analysis

max time kernel
141s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
20/06/2024, 04:28

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General

Target
02cdf153feb29727c33df9b5e9a5608d_JaffaCakes118.exe
Size 343KB
Sample240620-e3q6qatarr
SHA256 578b964e6dd79aa038121023031cb9bc1d6ea35d17c2a711db21b30c0699e4e4
MD5 02cdf153feb29727c33df9b5e9a5608d
SHA1 ce75d5a291b38d25444a5e735a5be5b0a596030d
SHA512 3ea5ba22e2b686286f83149cee2abf97d387bef6be48077efaa3d5e69f11f23a5f88f227f9b9f1be443dee5785ca351cfbe0dea777a766508fd82de17367013d
SSDEEP 6144:uRrJufvwgUp/nbrJYW1CRjW3EkFlfMoTGXFu7MJzitWm+nYUXvI/eoa25FQ50:u5JGstbrJYWsW3LluXsMpKWmqYeI5FQC
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

adware stealer 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-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation	02cdf153feb29727c33df9b5e9a5608d_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2428	SkypeClient.exe

Loads dropped DLL 1 IoCs

pid	Process
4804	Regsvr32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0008000000023463-13.dat	upx
behavioral2/memory/2428-19-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2428-22-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{2A1DC8D2-BCE7-46AB-AB29-B283CE94A7E7}	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{2A1DC8D2-BCE7-46AB-AB29-B283CE94A7E7}\	Regsvr32.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\esjok.ini	02cdf153feb29727c33df9b5e9a5608d_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\igjijvwqydwvw.dll	02cdf153feb29727c33df9b5e9a5608d_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\SkypeClient.exe	02cdf153feb29727c33df9b5e9a5608d_JaffaCakes118.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\assserak47.dll	02cdf153feb29727c33df9b5e9a5608d_JaffaCakes118.exe

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

System Information Discovery
T1082

Modifies registry class 11 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2A1DC8D2-BCE7-46AB-AB29-B283CE94A7E7}\InprocServer32\ = "C:\\Windows\\SysWow64\\igjijvwqydwvw.dll"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\igjijvwqydwvw.TIEBHOCom	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\igjijvwqydwvw.TIEBHOCom\	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\igjijvwqydwvw.TIEBHOCom\Clsid	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\igjijvwqydwvw.TIEBHOCom\Clsid\ = "{2A1DC8D2-BCE7-46AB-AB29-B283CE94A7E7}"	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2A1DC8D2-BCE7-46AB-AB29-B283CE94A7E7}\	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2A1DC8D2-BCE7-46AB-AB29-B283CE94A7E7}\InprocServer32	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2A1DC8D2-BCE7-46AB-AB29-B283CE94A7E7}\ProgID	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2A1DC8D2-BCE7-46AB-AB29-B283CE94A7E7}\ProgID\ = "igjijvwqydwvw.TIEBHOCom"	Regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2A1DC8D2-BCE7-46AB-AB29-B283CE94A7E7}	Regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{2A1DC8D2-BCE7-46AB-AB29-B283CE94A7E7}\InprocServer32\ThreadingModel = "Apartment"	Regsvr32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2428	SkypeClient.exe
2428	SkypeClient.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4064 wrote to memory of 4804	4064	02cdf153feb29727c33df9b5e9a5608d_JaffaCakes118.exe	88
PID 4064 wrote to memory of 4804	4064	02cdf153feb29727c33df9b5e9a5608d_JaffaCakes118.exe	88
PID 4064 wrote to memory of 4804	4064	02cdf153feb29727c33df9b5e9a5608d_JaffaCakes118.exe	88
PID 4064 wrote to memory of 2428	4064	02cdf153feb29727c33df9b5e9a5608d_JaffaCakes118.exe	89
PID 4064 wrote to memory of 2428	4064	02cdf153feb29727c33df9b5e9a5608d_JaffaCakes118.exe	89
PID 4064 wrote to memory of 2428	4064	02cdf153feb29727c33df9b5e9a5608d_JaffaCakes118.exe	89

C:\Users\Admin\AppData\Local\Temp\02cdf153feb29727c33df9b5e9a5608d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\02cdf153feb29727c33df9b5e9a5608d_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4064
- C:\Windows\SysWOW64\Regsvr32.exe
  Regsvr32.exe /s C:\Windows\system32\igjijvwqydwvw.dll
  2⤵
  - Loads dropped DLL
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:4804
- C:\Windows\SysWOW64\SkypeClient.exe
  "C:\Windows\system32\SkypeClient.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:2428

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Browser Extensions

T1176

Privilege Escalation

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

SkypeClient.exe

Path C:\Windows\SysWOW64\SkypeClient.exe
Size 44KB
SHA256 b3cb0ae301e5202c7ef63c4425eccc41a00fd75993c80a061da87835a8c35217
MD5 9b0a4a6b56362984b45b6905db32fa30
SHA1 f4c80a85d552b28f75489ff13c7d43304e8136c3
SHA512 58172e9bbb8d6deab39abd48baacabab9d074a09a9f0141a1711bb7c0650f91a1d91992543655fe69f5ae05e3ea13e5738f031d47ee8bb425d3b0532402dd73b
SSDEEP 768:ulsnH3CbnKO/43ar54CdI+e8J7CFaKZv2T1TBmMc+8:P3J3ary3uOaKZv2T1TBVcj
MD5 SHA1 SHA512 SSDEEP

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igjijvwqydwvw.dll

Path C:\Windows\SysWOW64\igjijvwqydwvw.dll
Size 568KB
SHA256 e493e75b40329b46856595b631edae607772bb8e4b8ef4aa64fac70d215355f0
MD5 4838ab50f49f14fda1d336c4913bc290
SHA1 e5cc9c6660fd8be214664defad6ba61c3e6fca35
SHA512 c7120baedb7729827329f089e7bf6b510753d66c5900ae51c0cf20a1f3f38b5f9388a412b33e7d4113812086d8a61fda7ab44eac061394aea8d4b83aacbc9960
SSDEEP 6144:jFwyOeA9uby83iTgmL+EgJSfI/MNjOu/g2YYvgYE1flwsuw2DuRr7rcW6S3gqAyh:7OeAEy2iT+gfzxQM7Du4SQqSGoaB+9g
MD5 SHA1 SHA512 SSDEEP

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memory/2428-19-0x0000000000400000-0x0000000000421000-memory.dmp

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memory/2428-22-0x0000000000400000-0x0000000000421000-memory.dmp

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memory/4064-0-0x0000000000400000-0x0000000000520000-memory.dmp

Download

memory/4064-1-0x0000000002120000-0x0000000002122000-memory.dmp

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memory/4064-5-0x0000000002180000-0x0000000002181000-memory.dmp

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memory/4064-21-0x0000000000400000-0x0000000000520000-memory.dmp

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memory/4064-23-0x0000000002120000-0x0000000002122000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads