86f20b53697f16c1c9797111a1d24096de214c2e6c91e1d7b89f5aff469a4f33

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
10/08/2024, 16:44

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General

Target

86db39b01bcfb222b5811537dbe1a1ab_JaffaCakes118.exe
Size

61KB
MD5

86db39b01bcfb222b5811537dbe1a1ab
SHA1

480b70354c9b5a05be252ffda35b52de3f72da05
SHA256

86f20b53697f16c1c9797111a1d24096de214c2e6c91e1d7b89f5aff469a4f33
SHA512

10452c3ecd2f00c143411c6e3a8fdfe3a11ecbb8f207e70a8c2886808451e6ffa1aa402f7e8efb07eb151fa9ba74228387cb300e5bd25f7d272c3487f8eff0f6
SSDEEP

1536:53dgTtiM3gcwCneXbZgQa5tmd41/a4ijY1asEOJx:5nAneXbZgQ3ca/iaSx

Score

8^/10

discovery persistence

Malware Config

Signatures

Server Software Component: Terminal Services DLL 1 TTPs 3 IoCs

persistence

Terminal Services DLL

T1505.005

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\windows\Parameters\ServiceDll = "%SystemRoot%\\System32\\rrvstk.dll"	86db39b01bcfb222b5811537dbe1a1ab_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet002\Services\windows\Parameters\ServiceDll = "%SystemRoot%\\System32\\rrvstk.dll"	86db39b01bcfb222b5811537dbe1a1ab_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet003\Services\windows\Parameters\ServiceDll = "%SystemRoot%\\System32\\rrvstk.dll"	86db39b01bcfb222b5811537dbe1a1ab_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1928	svchost.exe

Loads dropped DLL 2 IoCs

pid	Process
2824	86db39b01bcfb222b5811537dbe1a1ab_JaffaCakes118.exe
1928	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\000569cf.ini	86db39b01bcfb222b5811537dbe1a1ab_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\rrvstk.dll	86db39b01bcfb222b5811537dbe1a1ab_JaffaCakes118.exe

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	86db39b01bcfb222b5811537dbe1a1ab_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\86db39b01bcfb222b5811537dbe1a1ab_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\86db39b01bcfb222b5811537dbe1a1ab_JaffaCakes118.exe"
1⤵
- Server Software Component: Terminal Services DLL
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
PID:2824

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k windows
1⤵
- Deletes itself
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:1928

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4148,i,3387628439405076340,17957358341235678872,262144 --variations-seed-version --mojo-platform-channel-handle=4176 /prefetch:8
1⤵
PID:2692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Server Software Component

T1505

Terminal Services DLL

T1505.005

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\rrvstk.dll

Filesize
87KB

MD5
09818b996c7630db0846bb3fba4a1209

SHA1
013b7330c9136a0593cf2570855693c5db24319f

SHA256
6b2089b88bfc737c563b64e4ec7dd8db4ccb5e8a66764174561fe3c471fb74db

SHA512
de61db15a6ce05cf280ecdc8621ec6cbb8a43b842869250fe141db2c855d097e6579df0e1ad2ed563cced00d8de2fea39403b28a9ac31e326d42e9e84ac822ab

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