e2381e011d8dfc1051d99e65d6d65e7f045a0fcfec4d4e7108b7a60a1d64ae2b

General

Target

a007bacd2a91137b63174740380b6c2b_JaffaCakes118.exe
Size

196KB
MD5

a007bacd2a91137b63174740380b6c2b
SHA1

e4e1c64e569419aff84a6496bfaf0b903e230352
SHA256

e2381e011d8dfc1051d99e65d6d65e7f045a0fcfec4d4e7108b7a60a1d64ae2b
SHA512

8c8d7eb60f75e00f31c4ae9306da46afecf9ce4269976f042faa7d8bc6398f242d5c53d01550fc8d12043f041ede23bcd00c55a100b7f5581f4509cb6e817af6
SSDEEP

6144:Wg5E2VmxrCDR8lcv9R++HYdTOzbl/p3RLUbSL32:W8u1CKlWxETGxBLUbg2

Score

10^/10

discovery evasion persistence upx

Malware Config

Signatures

Modifies firewall policy service 3 TTPs 4 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	a007bacd2a91137b63174740380b6c2b_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\M-1-52-5782-8754-5245\winsam.exe = "C:\\Users\\Admin\\M-1-52-5782-8754-5245\\winsam.exe:*:Enabled:Microsoft® Windows System"	a007bacd2a91137b63174740380b6c2b_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	a007bacd2a91137b63174740380b6c2b_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	a007bacd2a91137b63174740380b6c2b_JaffaCakes118.exe

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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	a007bacd2a91137b63174740380b6c2b_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
4548	winsam.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2644-1-0x0000000000400000-0x0000000000438000-memory.dmp	upx
behavioral2/memory/2644-2-0x0000000000400000-0x0000000000438000-memory.dmp	upx
behavioral2/memory/4548-38-0x0000000000400000-0x0000000000438000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Microsoft® Windows System = "C:\\Users\\Admin\\M-1-52-5782-8754-5245\\winsam.exe"	a007bacd2a91137b63174740380b6c2b_JaffaCakes118.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 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	a007bacd2a91137b63174740380b6c2b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winsam.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	a007bacd2a91137b63174740380b6c2b_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 4548	2644	a007bacd2a91137b63174740380b6c2b_JaffaCakes118.exe	94
PID 2644 wrote to memory of 4548	2644	a007bacd2a91137b63174740380b6c2b_JaffaCakes118.exe	94
PID 2644 wrote to memory of 4548	2644	a007bacd2a91137b63174740380b6c2b_JaffaCakes118.exe	94

C:\Users\Admin\AppData\Local\Temp\a007bacd2a91137b63174740380b6c2b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a007bacd2a91137b63174740380b6c2b_JaffaCakes118.exe"
1⤵
- Modifies firewall policy service
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2644
- C:\Users\Admin\M-1-52-5782-8754-5245\winsam.exe
  "C:\Users\Admin\M-1-52-5782-8754-5245\winsam.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4548

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=4020,i,9445584274764997943,12714240264001792460,262144 --variations-seed-version --mojo-platform-channel-handle=4108 /prefetch:8
1⤵
PID:4976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\M-1-52-5782-8754-5245\winsam.exe

Filesize
196KB

MD5
a007bacd2a91137b63174740380b6c2b

SHA1
e4e1c64e569419aff84a6496bfaf0b903e230352

SHA256
e2381e011d8dfc1051d99e65d6d65e7f045a0fcfec4d4e7108b7a60a1d64ae2b

SHA512
8c8d7eb60f75e00f31c4ae9306da46afecf9ce4269976f042faa7d8bc6398f242d5c53d01550fc8d12043f041ede23bcd00c55a100b7f5581f4509cb6e817af6

Download Submit
memory/2644-0-0x000000000042B000-0x000000000042D000-memory.dmp

Filesize
8KB

Download
memory/2644-1-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2644-2-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4548-37-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4548-38-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads