a16409d26b013571ab08cbce7fe9464352c896004196d7cd56e6c18078916368

General

Target
jaffacakes118_Trojan-Ransom.Win32.Blocker.hejh.exe
Size 52KB
Sample261006-vjn51sstdx
SHA256 a16409d26b013571ab08cbce7fe9464352c896004196d7cd56e6c18078916368
MD5 3ae454ac01b6176eacd179df492d692c
SHA1 44b3e7dffeb5cac3f1c9fdac3a2d9db38df0c432
SHA512 ebefe1c98795aca93a5be0e3d48705020a40cdcda1774e177a29e6240aaa2840eaa1de473fd2c4686805e18bd4b23c7ba1a959ebc57eacf7e2055aab3ba1168f
SSDEEP 1536:os5FvgTRMhUopIcoq5OH0Bpfl9kf5nouy8H:fF6mUopHolK30outH
TLSH
T11533F284A289E6EDF04904B80CABDFECDE85BD08A85099C575F4B73F3CB1B44ED19691
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery execution persistence upx

Malware Config

Signatures

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-1-5-21-1696934516-3600988056-1840298893-1000\Control Panel\International\Geo\Nation	jaffacakes118_Trojan-Ransom.Win32.Blocker.hejh.exe

Executes dropped EXE 2 IoCs

pid	Process
1288	Protect.exe
4548	Protect.exe

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-1-5-21-1696934516-3600988056-1840298893-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\run32.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Protect.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1288 set thread context of 4548	1288	Protect.exe	95

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3024-0-0x0000000000400000-0x0000000000445000-memory.dmp	upx
behavioral1/files/0x000600000002325a-10.dat	upx
behavioral1/memory/3024-19-0x0000000000400000-0x0000000000445000-memory.dmp	upx
behavioral1/memory/1288-29-0x0000000000400000-0x0000000000445000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
4948	cmd.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3588	4548	WerFault.exe	95

System Location Discovery: System Language Discovery 1 TTPs 5 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	jaffacakes118_Trojan-Ransom.Win32.Blocker.hejh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Protect.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Protect.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3024	jaffacakes118_Trojan-Ransom.Win32.Blocker.hejh.exe
1288	Protect.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 4948	3024	jaffacakes118_Trojan-Ransom.Win32.Blocker.hejh.exe	89
PID 4948 wrote to memory of 4932	4948	cmd.exe	92
PID 3024 wrote to memory of 1288	3024	jaffacakes118_Trojan-Ransom.Win32.Blocker.hejh.exe	93
PID 1288 wrote to memory of 4548	1288	Protect.exe	95
PID 1288 wrote to memory of 4548	1288	Protect.exe	95
PID 1288 wrote to memory of 4548	1288	Protect.exe	95
PID 1288 wrote to memory of 4548	1288	Protect.exe	95
PID 1288 wrote to memory of 4548	1288	Protect.exe	95
PID 1288 wrote to memory of 4548	1288	Protect.exe	95

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Ransom.Win32.Blocker.hejh.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Ransom.Win32.Blocker.hejh.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3024
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\PKJEp.bat" "
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4948
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "run32.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Protect.exe" /f
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:4932
- C:\Users\Admin\AppData\Roaming\Protect.exe
  "C:\Users\Admin\AppData\Roaming\Protect.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1288
- - C:\Users\Admin\AppData\Roaming\Protect.exe
    C:\Users\Admin\AppData\Roaming\Protect.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4548
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4548 -s 496
      4⤵
      Program crash
      PID:3588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4548 -ip 4548
1⤵
PID:400

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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

PKJEp.bat

Path C:\Users\Admin\AppData\Local\Temp\PKJEp.bat
Size 136B
SHA256 a0e2c15894d0b62350afb63cf1006757800cfdc74806e843973b53c607710c57
MD5 56161e2c3da9aa6d5a795516ad9d0feb
SHA1 aad8fec959e227052d7306bd414062fbb46163ed
SHA512 d42e92f7e590fe98317deeb31bb60f4281010213f0041e37f53b0508d6825e1eb6390a73faec08c53d3a40f901c008d0f2bc3e75846cc1f312e9222dcab503d0
TLSH
T127C02B013490A31EE0705151011A540ED3A387CF2000568F86C4400C1105A4EE8B70C3
MD5 SHA1 SHA512 TLSH

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Protect.exe

Path C:\Users\Admin\AppData\Roaming\Protect.exe
Size 52KB
SHA256 a16409d26b013571ab08cbce7fe9464352c896004196d7cd56e6c18078916368
MD5 3ae454ac01b6176eacd179df492d692c
SHA1 44b3e7dffeb5cac3f1c9fdac3a2d9db38df0c432
SHA512 ebefe1c98795aca93a5be0e3d48705020a40cdcda1774e177a29e6240aaa2840eaa1de473fd2c4686805e18bd4b23c7ba1a959ebc57eacf7e2055aab3ba1168f
SSDEEP 1536:os5FvgTRMhUopIcoq5OH0Bpfl9kf5nouy8H:fF6mUopHolK30outH
TLSH
T11533F284A289E6EDF04904B80CABDFECDE85BD08A85099C575F4B73F3CB1B44ED19691
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1288-29-0x0000000000400000-0x0000000000445000-memory.dmp

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memory/3024-0-0x0000000000400000-0x0000000000445000-memory.dmp

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memory/3024-19-0x0000000000400000-0x0000000000445000-memory.dmp

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memory/4548-22-0x0000000000400000-0x0000000000405000-memory.dmp

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memory/4548-25-0x0000000000400000-0x0000000000405000-memory.dmp

Download

memory/4548-27-0x0000000000400000-0x0000000000405000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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