b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028

Analysis

max time kernel
146s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29/11/2022, 11:27

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General

Target

b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe
Size

84KB
MD5

aa1be9f021d85c53a925b08b20f13116
SHA1

f8aae5cc5dc8f3b3d664309e0322caa64cc77a60
SHA256

b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028
SHA512

092b94b840f12d85c864422c355ecda6d4bcbef31c2903f098d0a2d4b7dc0a9a47a19a2817951296971ad447da61da9a07c4899de6ffbe64166a2476b11f0f19
SSDEEP

1536:NxTZKytYVaKArvWv+v5Ry+pyDMqtcAvxgYD2Fqhi/V:VIgFvLy+QgqG+OYiYEt

Score

8^/10

persistence upx

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Internet Explorer = "C:\\Users\\Admin\\InternetExplorer.lnk"	ctfmon.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\software\microsoft\windows\currentversion\Policies\Explorer\Run	ctfmon.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Internet Explorer = "C:\\Users\\Admin\\InternetExplorer.lnk"	ctfmon.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	ctfmon.exe

Executes dropped EXE 2 IoCs

pid	Process
3304	iexplorer.exe
1332	iexplorer.exe

UPX packed file 11 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4868-135-0x0000000000400000-0x000000000040C000-memory.dmp	upx
behavioral2/memory/4868-137-0x0000000000400000-0x000000000040C000-memory.dmp	upx
behavioral2/memory/4868-138-0x0000000000400000-0x000000000040C000-memory.dmp	upx
behavioral2/memory/4868-141-0x0000000000400000-0x000000000040C000-memory.dmp	upx
behavioral2/memory/4868-145-0x0000000000400000-0x000000000040C000-memory.dmp	upx
behavioral2/memory/1332-156-0x0000000000400000-0x000000000040C000-memory.dmp	upx
behavioral2/memory/1692-158-0x0000000000400000-0x000000000040C000-memory.dmp	upx
behavioral2/memory/1332-161-0x0000000000400000-0x000000000040C000-memory.dmp	upx
behavioral2/memory/1692-160-0x0000000000400000-0x000000000040C000-memory.dmp	upx
behavioral2/memory/1692-162-0x0000000000400000-0x000000000040C000-memory.dmp	upx
behavioral2/memory/1692-165-0x0000000000400000-0x000000000040C000-memory.dmp	upx

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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe

Maps connected drives based on registry 3 TTPs 4 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	iexplorer.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	iexplorer.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4588 set thread context of 4868	4588	b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe	81
PID 3304 set thread context of 1332	3304	iexplorer.exe	83
PID 1332 set thread context of 1692	1332	iexplorer.exe	84

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1692	ctfmon.exe
1692	ctfmon.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
4588	b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe
4868	b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe
3304	iexplorer.exe
1332	iexplorer.exe
1692	ctfmon.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 4588 wrote to memory of 4868	4588	b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe	81
PID 4588 wrote to memory of 4868	4588	b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe	81
PID 4588 wrote to memory of 4868	4588	b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe	81
PID 4588 wrote to memory of 4868	4588	b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe	81
PID 4588 wrote to memory of 4868	4588	b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe	81
PID 4588 wrote to memory of 4868	4588	b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe	81
PID 4588 wrote to memory of 4868	4588	b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe	81
PID 4588 wrote to memory of 4868	4588	b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe	81
PID 4868 wrote to memory of 3304	4868	b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe	82
PID 4868 wrote to memory of 3304	4868	b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe	82
PID 4868 wrote to memory of 3304	4868	b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe	82
PID 3304 wrote to memory of 1332	3304	iexplorer.exe	83
PID 3304 wrote to memory of 1332	3304	iexplorer.exe	83
PID 3304 wrote to memory of 1332	3304	iexplorer.exe	83
PID 3304 wrote to memory of 1332	3304	iexplorer.exe	83
PID 3304 wrote to memory of 1332	3304	iexplorer.exe	83
PID 3304 wrote to memory of 1332	3304	iexplorer.exe	83
PID 3304 wrote to memory of 1332	3304	iexplorer.exe	83
PID 3304 wrote to memory of 1332	3304	iexplorer.exe	83
PID 1332 wrote to memory of 1692	1332	iexplorer.exe	84
PID 1332 wrote to memory of 1692	1332	iexplorer.exe	84
PID 1332 wrote to memory of 1692	1332	iexplorer.exe	84
PID 1332 wrote to memory of 1692	1332	iexplorer.exe	84
PID 1332 wrote to memory of 1692	1332	iexplorer.exe	84
PID 1332 wrote to memory of 1692	1332	iexplorer.exe	84
PID 1332 wrote to memory of 1692	1332	iexplorer.exe	84
PID 1332 wrote to memory of 1692	1332	iexplorer.exe	84

C:\Users\Admin\AppData\Local\Temp\b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe
"C:\Users\Admin\AppData\Local\Temp\b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4588
- C:\Users\Admin\AppData\Local\Temp\b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe
  "C:\Users\Admin\AppData\Local\Temp\b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028.exe"
  2⤵
  - Checks computer location settings
  - Maps connected drives based on registry
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4868
- - C:\Users\Admin\iexplorer.exe
    "C:\Users\Admin\iexplorer.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3304
  - - C:\Users\Admin\iexplorer.exe
      "C:\Users\Admin\iexplorer.exe"
      4⤵
      Executes dropped EXE
      Maps connected drives based on registry
      Suspicious use of SetThreadContext
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1332
    - - C:\Windows\SysWOW64\ctfmon.exe
        
        "C:\Windows\SysWOW64\ctfmon.exe"
        5⤵
        Adds policy Run key to start application
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of SetWindowsHookEx
        
        PID:1692

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\iexplorer.exe

Filesize
84KB

MD5
aa1be9f021d85c53a925b08b20f13116

SHA1
f8aae5cc5dc8f3b3d664309e0322caa64cc77a60

SHA256
b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028

SHA512
092b94b840f12d85c864422c355ecda6d4bcbef31c2903f098d0a2d4b7dc0a9a47a19a2817951296971ad447da61da9a07c4899de6ffbe64166a2476b11f0f19

Download Submit
C:\Users\Admin\iexplorer.exe

Filesize
84KB

MD5
aa1be9f021d85c53a925b08b20f13116

SHA1
f8aae5cc5dc8f3b3d664309e0322caa64cc77a60

SHA256
b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028

SHA512
092b94b840f12d85c864422c355ecda6d4bcbef31c2903f098d0a2d4b7dc0a9a47a19a2817951296971ad447da61da9a07c4899de6ffbe64166a2476b11f0f19

Download Submit
C:\Users\Admin\iexplorer.exe

Filesize
84KB

MD5
aa1be9f021d85c53a925b08b20f13116

SHA1
f8aae5cc5dc8f3b3d664309e0322caa64cc77a60

SHA256
b7459f8e1019c45956af123953ac09e15fe1f34c2f2afabaffb1f9a8a4df9028

SHA512
092b94b840f12d85c864422c355ecda6d4bcbef31c2903f098d0a2d4b7dc0a9a47a19a2817951296971ad447da61da9a07c4899de6ffbe64166a2476b11f0f19

Download Submit
memory/1332-161-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1332-156-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1692-158-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1692-165-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1692-162-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1692-160-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/4868-141-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/4868-145-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/4868-138-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/4868-137-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/4868-135-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download