a23e7d2b9a4f199251b3980ea3b62a3b0a171cba47ecfbcbbff8c73dd5cd7508

General

Target

159ad3eea650bf848817594c3a4d63d1_JaffaCakes118.exe
Size

54KB
MD5

159ad3eea650bf848817594c3a4d63d1
SHA1

2e170ca60f9730c9cd0ffc1bb5e9635bcdc40c65
SHA256

a23e7d2b9a4f199251b3980ea3b62a3b0a171cba47ecfbcbbff8c73dd5cd7508
SHA512

3c3fc268538d14a4ada042e16302d5ec099f3fa3ca90637688d82a947fd8317eff4465366028e5630fb6e43f41a8918b939acc0a8793bf1c13f2f0e1e092890a
SSDEEP

1536:ojgB7WCypwgidCHQEcUMyIVu7F+cARVC29D:oqcBidV5Vu7F+H79

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1356	mswfzfgx.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\mswfzfgx.exe	159ad3eea650bf848817594c3a4d63d1_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\mswfzfgx.exe	159ad3eea650bf848817594c3a4d63d1_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	mswfzfgx.exe

Hide Artifacts: Hidden Users 1 TTPs 1 IoCs

defense_evasion

Hidden Users

T1564.002

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList\TermUser = "0"	reg.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/584-0-0x0000000000400000-0x0000000000420000-memory.dmp	upx
behavioral1/files/0x000c000000014b4f-4.dat	upx

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	159ad3eea650bf848817594c3a4d63d1_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mswfzfgx.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mswfzfgx.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mswfzfgx.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mswfzfgx.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9F41FD76-6F99-418F-A090-A4A21BA10265}\WpadDecisionReason = "1"	mswfzfgx.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9F41FD76-6F99-418F-A090-A4A21BA10265}\WpadDecisionTime = e0066461c416db01	mswfzfgx.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9F41FD76-6F99-418F-A090-A4A21BA10265}\WpadNetworkName = "Network 3"	mswfzfgx.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mswfzfgx.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mswfzfgx.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mswfzfgx.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mswfzfgx.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mswfzfgx.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mswfzfgx.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9F41FD76-6F99-418F-A090-A4A21BA10265}\WpadDecision = "0"	mswfzfgx.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9F41FD76-6F99-418F-A090-A4A21BA10265}\a2-c4-09-7a-68-84	mswfzfgx.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a2-c4-09-7a-68-84\WpadDecisionReason = "1"	mswfzfgx.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mswfzfgx.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f007b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mswfzfgx.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9F41FD76-6F99-418F-A090-A4A21BA10265}	mswfzfgx.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a2-c4-09-7a-68-84\WpadDecisionTime = e0066461c416db01	mswfzfgx.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a2-c4-09-7a-68-84\WpadDecision = "0"	mswfzfgx.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mswfzfgx.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mswfzfgx.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mswfzfgx.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a2-c4-09-7a-68-84	mswfzfgx.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1356 wrote to memory of 736	1356	mswfzfgx.exe	33
PID 1356 wrote to memory of 736	1356	mswfzfgx.exe	33
PID 1356 wrote to memory of 736	1356	mswfzfgx.exe	33
PID 1356 wrote to memory of 736	1356	mswfzfgx.exe	33

C:\Users\Admin\AppData\Local\Temp\159ad3eea650bf848817594c3a4d63d1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\159ad3eea650bf848817594c3a4d63d1_JaffaCakes118.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
PID:584

C:\Windows\SysWOW64\mswfzfgx.exe
C:\Windows\SysWOW64\mswfzfgx.exe /service
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious use of WriteProcessMemory
PID:1356
- C:\Windows\system32\reg.exe
  C:\Windows\Sysnative\reg.exe add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList" /v TermUser /t REG_DWORD /d 0
  2⤵
  - Hide Artifacts: Hidden Users
  PID:736

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

1

T1564

Hidden Users

1

T1564.002

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\mswfzfgx.exe

Filesize
54KB

MD5
159ad3eea650bf848817594c3a4d63d1

SHA1
2e170ca60f9730c9cd0ffc1bb5e9635bcdc40c65

SHA256
a23e7d2b9a4f199251b3980ea3b62a3b0a171cba47ecfbcbbff8c73dd5cd7508

SHA512
3c3fc268538d14a4ada042e16302d5ec099f3fa3ca90637688d82a947fd8317eff4465366028e5630fb6e43f41a8918b939acc0a8793bf1c13f2f0e1e092890a

Download Submit
memory/584-0-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/584-1-0x0000000000220000-0x0000000000223000-memory.dmp

Filesize
12KB

Download
memory/584-2-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/584-6-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1356-5-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1356-19-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1356-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing