470b50bc328ed4fc1a1a0f71178eb731eb5c00efdeeffac5daef4e369f86537a

General

Target

ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe
Size

33KB
MD5

ecea1b9ef4553b388a822cd4634706ed
SHA1

527fd2fa760a20a0ebf0beba2dd36f53b54f5ff6
SHA256

470b50bc328ed4fc1a1a0f71178eb731eb5c00efdeeffac5daef4e369f86537a
SHA512

85581d305609ee9c20f6fa3412b9d2dd90f453cc12403fb45482cc8829fe469102c69ec71778585e1257e6be4bf1e28f7e8890a70eac9fa455dc23a3490f8939
SSDEEP

384:96Tp0OfNRSZe+1i3o0UI/BUgInq+AQBOXzn3q+pWNAkSmyb2ss7vYhuwwP8R8ERv:9ax49s40bSBfIzpWN9abK7vahBzHc

Score

10^/10

discovery evasion execution spyware stealer upx

Malware Config

Signatures

Disables service(s) 3 TTPs
evasion execution

Windows Service
T1543.003

Service Stop
T1489

Service Execution
T1569.002
Stops running service(s) 4 TTPs
evasion execution

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Service Execution
T1569.002

Deletes itself 1 IoCs

pid	Process
1032	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1032	rundll32.exe

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 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1496-0-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/1496-4-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral2/memory/1496-14-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Drops file in System32 directory 8 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\dllcache\midimap.dll	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\sysapp19.dll	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\YUksuser.dll	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\YUksuser.dll	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\ksuser.dll	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\dllcache\ksuser.dll	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\YUmidimap.dll	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\midimap.dll	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe

Launches sc.exe 2 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
4276	sc.exe
4704	sc.exe

System Location Discovery: System Language Discovery 1 TTPs 6 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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe
1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe
1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe
1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe
1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe
1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1496 wrote to memory of 3928	1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe	97
PID 1496 wrote to memory of 3928	1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe	97
PID 1496 wrote to memory of 3928	1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe	97
PID 1496 wrote to memory of 4276	1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe	98
PID 1496 wrote to memory of 4276	1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe	98
PID 1496 wrote to memory of 4276	1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe	98
PID 1496 wrote to memory of 4704	1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe	99
PID 1496 wrote to memory of 4704	1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe	99
PID 1496 wrote to memory of 4704	1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe	99
PID 1496 wrote to memory of 1032	1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe	103
PID 1496 wrote to memory of 1032	1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe	103
PID 1496 wrote to memory of 1032	1496	ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe	103
PID 3928 wrote to memory of 5008	3928	net.exe	104
PID 3928 wrote to memory of 5008	3928	net.exe	104
PID 3928 wrote to memory of 5008	3928	net.exe	104

C:\Users\Admin\AppData\Local\Temp\ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ecea1b9ef4553b388a822cd4634706ed_JaffaCakes118.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1496
- C:\Windows\SysWOW64\net.exe
  net stop cryptsvc
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3928
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop cryptsvc
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5008
- C:\Windows\SysWOW64\sc.exe
  sc config cryptsvc start= disabled
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4276
- C:\Windows\SysWOW64\sc.exe
  sc delete cryptsvc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4704
- C:\Windows\SysWOW64\rundll32.exe
  C:\Users\Admin\AppData\Local\Temp\1726809613.dat, ServerMain c:\users\admin\appdata\local\temp\ecea1b9ef4553b388a822cd4634706ed_jaffacakes118.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:1032

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=4356,i,16316361669272684588,6171287487746154806,262144 --variations-seed-version --mojo-platform-channel-handle=4080 /prefetch:8
1⤵
PID:2352

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

2

T1569

Service Execution

2

T1569.002

Persistence

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Privilege Escalation

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Service Stop

2

T1489

Replay Monitor

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Downloads

C:\Windows\SysWOW64\sysapp19.dll

Filesize
33KB

MD5
93eab151681f6524ca618092739536b6

SHA1
bcd4c9470258b02138b43d76c8a01643f16855ce

SHA256
ec57aa2eb000268b46e389fb37d4e9996323773ba9dd50df38ab734d73eff574

SHA512
31b1b80a20226d1341e67255bf62b970e29f8bf5fff080d7d320b2885f704f5bdbe1cb35d7673a799a3cca39946a39c76949041d51b959d48a9b12581873c005

Download Submit
memory/1496-0-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1496-4-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1496-14-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

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