586512e8141469dac710fd7d0d7d35b94a7745c661d49a33ae625895c16a32c6

General

Target

f52c7b690208a4fd9c3f2cc670e25375_JaffaCakes118.exe
Size

747KB
MD5

f52c7b690208a4fd9c3f2cc670e25375
SHA1

44ae7cfe1d226ff41cb7bf07b797b189f136e15e
SHA256

586512e8141469dac710fd7d0d7d35b94a7745c661d49a33ae625895c16a32c6
SHA512

599b0bca0b27f7e2d50369aeb2c6717c30df0c4ad8863d959fe7c417f61ba7bc5aee2df06ea753d622d7f5957046b2bf4170bf9a8d6d680af9e9dbcb52da4513
SSDEEP

12288:4soCYNrHi0tJICt3DIi0S80hrRZaqWR40rHeluaL0dUiuRm2Bao5:4soCYNrC2NJvhjyR4kKJRi0+4

Score

7^/10

discovery upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 3 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0008000000023c9d-4.dat	acprotect
behavioral2/files/0x0007000000023c9f-15.dat	acprotect
behavioral2/files/0x0007000000023c9e-13.dat	acprotect

Executes dropped EXE 1 IoCs

pid	Process
1564	PrstService.exe

Loads dropped DLL 4 IoCs

pid	Process
4308	f52c7b690208a4fd9c3f2cc670e25375_JaffaCakes118.exe
1564	PrstService.exe
1564	PrstService.exe
1564	PrstService.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\PrstService.exe	f52c7b690208a4fd9c3f2cc670e25375_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\PrstService.exe	f52c7b690208a4fd9c3f2cc670e25375_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\PrstService.dll	PrstService.exe
File opened for modification	C:\Windows\SysWOW64\PrstService.dll	PrstService.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0008000000023c9d-4.dat	upx
behavioral2/memory/4308-5-0x0000000010000000-0x000000001012A000-memory.dmp	upx
behavioral2/files/0x0007000000023c9f-15.dat	upx
behavioral2/files/0x0007000000023c9e-13.dat	upx
behavioral2/memory/1564-26-0x0000000002360000-0x0000000002384000-memory.dmp	upx
behavioral2/memory/4308-30-0x0000000010000000-0x000000001012A000-memory.dmp	upx
behavioral2/memory/1564-33-0x0000000010000000-0x000000001012A000-memory.dmp	upx
behavioral2/memory/1564-49-0x0000000010000000-0x000000001012A000-memory.dmp	upx

Drops file in Program Files directory 8 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Internet Explorer\Exmlrpc.fne	PrstService.exe
File created	C:\Program Files\Internet Explorer\krnln.fnr	PrstService.exe
File opened for modification	C:\Program Files\Internet Explorer\krnln.fnr	PrstService.exe
File created	C:\Program Files\Internet Explorer\IJL105.DLL	PrstService.exe
File opened for modification	C:\Program Files\Internet Explorer\IJL105.DLL	PrstService.exe
File created	C:\Program Files\Internet Explorer\dp1.fne	PrstService.exe
File opened for modification	C:\Program Files\Internet Explorer\dp1.fne	PrstService.exe
File created	C:\Program Files\Internet Explorer\Exmlrpc.fne	PrstService.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Fonts\PrstService.jpg	PrstService.exe
File opened for modification	C:\Windows\Fonts\PrstService.jpg	PrstService.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 4 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	f52c7b690208a4fd9c3f2cc670e25375_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PrstService.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IEXPLORE.EXE

Modifies Internet Explorer settings 1 TTPs 16 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{B78D2D58-82D7-11E6-B35D-76A26C5A2900} = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "180939234"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Check_Associations = "NO"	PrstService.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\""	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4308	f52c7b690208a4fd9c3f2cc670e25375_JaffaCakes118.exe
4308	f52c7b690208a4fd9c3f2cc670e25375_JaffaCakes118.exe
1564	PrstService.exe
1564	PrstService.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeSystemtimePrivilege	1564	PrstService.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2668	IEXPLORE.EXE

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
4308	f52c7b690208a4fd9c3f2cc670e25375_JaffaCakes118.exe
1564	PrstService.exe
2668	IEXPLORE.EXE
2668	IEXPLORE.EXE
4948	IEXPLORE.EXE
4948	IEXPLORE.EXE
4948	IEXPLORE.EXE
4948	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4308 wrote to memory of 1564	4308	f52c7b690208a4fd9c3f2cc670e25375_JaffaCakes118.exe	84
PID 4308 wrote to memory of 1564	4308	f52c7b690208a4fd9c3f2cc670e25375_JaffaCakes118.exe	84
PID 4308 wrote to memory of 1564	4308	f52c7b690208a4fd9c3f2cc670e25375_JaffaCakes118.exe	84
PID 4308 wrote to memory of 3892	4308	f52c7b690208a4fd9c3f2cc670e25375_JaffaCakes118.exe	88
PID 4308 wrote to memory of 3892	4308	f52c7b690208a4fd9c3f2cc670e25375_JaffaCakes118.exe	88
PID 4308 wrote to memory of 3892	4308	f52c7b690208a4fd9c3f2cc670e25375_JaffaCakes118.exe	88
PID 1564 wrote to memory of 2668	1564	PrstService.exe	98
PID 1564 wrote to memory of 2668	1564	PrstService.exe	98
PID 2668 wrote to memory of 4948	2668	IEXPLORE.EXE	99
PID 2668 wrote to memory of 4948	2668	IEXPLORE.EXE	99
PID 2668 wrote to memory of 4948	2668	IEXPLORE.EXE	99
PID 1564 wrote to memory of 2668	1564	PrstService.exe	98

C:\Users\Admin\AppData\Local\Temp\f52c7b690208a4fd9c3f2cc670e25375_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f52c7b690208a4fd9c3f2cc670e25375_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4308
- C:\Windows\SysWOW64\PrstService.exe
  C:\Windows\system32\PrstService.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in System32 directory
  - Drops file in Program Files directory
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1564
- - C:\Program Files\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files\Internet Explorer\IEXPLORE.EXE" -nohome
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2668
  - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2668 CREDAT:17410 /prefetch:2
      4⤵
      System Location Discovery: System Language Discovery
      Modifies Internet Explorer settings
      Suspicious use of SetWindowsHookEx
      PID:4948
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c c:\delus.bat
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3892

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

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:\Users\Admin\AppData\Local\Temp\E_4\Exmlrpc.fne

Filesize
34KB

MD5
387cf1d2f17aff6967f3107773764513

SHA1
b971bcd44988bee744f8133acb032e07d9dcd1db

SHA256
74c55aaee905be674763d679ca05a6baaf93f456b5d8935d6293e523766968c6

SHA512
19a4fb39b2f9863c92d76016290e701fd6bb1aa5d889896666922fd862d5b72b95a97aa27d3d0b3218233ba9dbcb3db147efbf9e61e5be853d4d3672e87bfd5c

Download Submit
C:\Users\Admin\AppData\Local\Temp\E_4\dp1.fne

Filesize
56KB

MD5
6649262561fba5d19f8b99dd251b5d02

SHA1
286e2ab6bc2220b3c9a83720c4c612623210e10f

SHA256
824afe6bde1c2890077e9a40c4261a77a1d736429709a45d68ed508581e74771

SHA512
688bd75b1e9661f425a21577063362e609ce496880a4780012317d56075095e5804fb7b849b32fbbea06fbbff5d47a5534113b6613f1a236b2a76cd043bba7ef

Download Submit
C:\Users\Admin\AppData\Local\Temp\E_4\krnln.fnr

Filesize
406KB

MD5
e79169d47394020f7c893abb840b61bb

SHA1
c5b9c2cbef3d5458b52ebb67461e84432673fb1b

SHA256
11c25cdeb02ac401d913dc48b935a087e32c2d9b7b7c4a5cfdf36e4947e959dc

SHA512
21ca64559082a31e46e28513de762fa2239c521f60b3485bf99926f895f0bf6f63fe2162c3e2eb25705efad22d351e24b8283442f4954ac88bc8c56ef5dc529a

Download Submit
C:\Windows\SysWOW64\PrstService.exe

Filesize
747KB

MD5
f52c7b690208a4fd9c3f2cc670e25375

SHA1
44ae7cfe1d226ff41cb7bf07b797b189f136e15e

SHA256
586512e8141469dac710fd7d0d7d35b94a7745c661d49a33ae625895c16a32c6

SHA512
599b0bca0b27f7e2d50369aeb2c6717c30df0c4ad8863d959fe7c417f61ba7bc5aee2df06ea753d622d7f5957046b2bf4170bf9a8d6d680af9e9dbcb52da4513

Download Submit
\??\c:\delus.bat

Filesize
230B

MD5
72504473241fb6647e9b3c242e37441a

SHA1
7431b89da9bccd4b304e48d1ac04a90ba473c527

SHA256
b567ca5370d027d49bad6abbc3d88e7016da39d3648468cc19718f0e03aa7d6c

SHA512
a798bc377697eb7e65253f34f4c215f108cf93e08a941b73a9fdf667063bcee28fa327ba743d4c2c3502e105dcc65ce9417de04be5eb2571a49f8ca939b9ae93

Download Submit
memory/1564-26-0x0000000002360000-0x0000000002384000-memory.dmp

Filesize
144KB

Download
memory/1564-33-0x0000000010000000-0x000000001012A000-memory.dmp

Filesize
1.2MB

Download
memory/1564-50-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1564-49-0x0000000010000000-0x000000001012A000-memory.dmp

Filesize
1.2MB

Download
memory/4308-5-0x0000000010000000-0x000000001012A000-memory.dmp

Filesize
1.2MB

Download
memory/4308-30-0x0000000010000000-0x000000001012A000-memory.dmp

Filesize
1.2MB

Download
memory/4308-31-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4308-0-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download

Analysis

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