aef73bdf68358454d2457c41024c212efec15d607d5f50d1ad1a9c90b7f39c0f

General

Target

aef73bdf68358454d2457c41024c212efec15d607d5f50d1ad1a9c90b7f39c0f.exe
Size

175KB
MD5

2599333a694e33fa15d4365d459256a0
SHA1

21876de3e03efa3bbc0d407df94d63e0a7861b56
SHA256

aef73bdf68358454d2457c41024c212efec15d607d5f50d1ad1a9c90b7f39c0f
SHA512

b3a19aaa5bc0f1c08b91a043e6efb79cb15e8ca0e1ec5276e0bb1ee6646e77212fb74cf0ad75749dc3c265a33e228d2605814c1e739f8fee9b6b468ee04108da
SSDEEP

3072:805jAKZJoMUCNvmfsjXTeTRtkpsaVw7h1rdMohldcFwt60RTqxqPJkcBdlrvrRsF:84oM1NvmfmXS86hVdMoviFwBqxq7jRsR

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4300	rlzwidhmr.exe

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	aef73bdf68358454d2457c41024c212efec15d607d5f50d1ad1a9c90b7f39c0f.exe

Loads dropped DLL 1 IoCs

pid	Process
4300	rlzwidhmr.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	aef73bdf68358454d2457c41024c212efec15d607d5f50d1ad1a9c90b7f39c0f.exe

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
3360	taskkill.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3200	PING.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4300	rlzwidhmr.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3360	taskkill.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
4300	rlzwidhmr.exe
4300	rlzwidhmr.exe
4300	rlzwidhmr.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
4300	rlzwidhmr.exe
4300	rlzwidhmr.exe
4300	rlzwidhmr.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2492 wrote to memory of 4968	2492	aef73bdf68358454d2457c41024c212efec15d607d5f50d1ad1a9c90b7f39c0f.exe	80
PID 2492 wrote to memory of 4968	2492	aef73bdf68358454d2457c41024c212efec15d607d5f50d1ad1a9c90b7f39c0f.exe	80
PID 2492 wrote to memory of 4968	2492	aef73bdf68358454d2457c41024c212efec15d607d5f50d1ad1a9c90b7f39c0f.exe	80
PID 4968 wrote to memory of 3360	4968	cmd.exe	81
PID 4968 wrote to memory of 3360	4968	cmd.exe	81
PID 4968 wrote to memory of 3360	4968	cmd.exe	81
PID 4968 wrote to memory of 3200	4968	cmd.exe	82
PID 4968 wrote to memory of 3200	4968	cmd.exe	82
PID 4968 wrote to memory of 3200	4968	cmd.exe	82
PID 4968 wrote to memory of 4300	4968	cmd.exe	83
PID 4968 wrote to memory of 4300	4968	cmd.exe	83
PID 4968 wrote to memory of 4300	4968	cmd.exe	83

C:\Users\Admin\AppData\Local\Temp\aef73bdf68358454d2457c41024c212efec15d607d5f50d1ad1a9c90b7f39c0f.exe
"C:\Users\Admin\AppData\Local\Temp\aef73bdf68358454d2457c41024c212efec15d607d5f50d1ad1a9c90b7f39c0f.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2492
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /f /pid 2492 & ping -n 3 127.1 & del /f /q "C:\Users\Admin\AppData\Local\Temp\aef73bdf68358454d2457c41024c212efec15d607d5f50d1ad1a9c90b7f39c0f.exe" & start C:\Users\Admin\AppData\Local\RLZWID~1.EXE -f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4968
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /f /pid 2492
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3360
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 3 127.1
    3⤵
    - Runs ping.exe
    PID:3200
- - C:\Users\Admin\AppData\Local\rlzwidhmr.exe
    C:\Users\Admin\AppData\Local\RLZWID~1.EXE -f
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    PID:4300

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\rlzwidhmr.exe

Filesize
175KB

MD5
2599333a694e33fa15d4365d459256a0

SHA1
21876de3e03efa3bbc0d407df94d63e0a7861b56

SHA256
aef73bdf68358454d2457c41024c212efec15d607d5f50d1ad1a9c90b7f39c0f

SHA512
b3a19aaa5bc0f1c08b91a043e6efb79cb15e8ca0e1ec5276e0bb1ee6646e77212fb74cf0ad75749dc3c265a33e228d2605814c1e739f8fee9b6b468ee04108da

Download Submit
C:\Users\Admin\AppData\Local\rlzwidhmr.exe

Filesize
175KB

MD5
2599333a694e33fa15d4365d459256a0

SHA1
21876de3e03efa3bbc0d407df94d63e0a7861b56

SHA256
aef73bdf68358454d2457c41024c212efec15d607d5f50d1ad1a9c90b7f39c0f

SHA512
b3a19aaa5bc0f1c08b91a043e6efb79cb15e8ca0e1ec5276e0bb1ee6646e77212fb74cf0ad75749dc3c265a33e228d2605814c1e739f8fee9b6b468ee04108da

Download Submit
C:\Users\Admin\AppData\Local\rlzwidhmr.exe

Filesize
175KB

MD5
2599333a694e33fa15d4365d459256a0

SHA1
21876de3e03efa3bbc0d407df94d63e0a7861b56

SHA256
aef73bdf68358454d2457c41024c212efec15d607d5f50d1ad1a9c90b7f39c0f

SHA512
b3a19aaa5bc0f1c08b91a043e6efb79cb15e8ca0e1ec5276e0bb1ee6646e77212fb74cf0ad75749dc3c265a33e228d2605814c1e739f8fee9b6b468ee04108da

Download Submit
memory/2492-132-0x0000000001000000-0x0000000001138000-memory.dmp

Filesize
1.2MB

Download
memory/2492-133-0x0000000001000000-0x0000000001138000-memory.dmp

Filesize
1.2MB

Download
memory/2492-135-0x0000000001000000-0x0000000001138000-memory.dmp

Filesize
1.2MB

Download
memory/3200-137-0x0000000000000000-mapping.dmp

Download
memory/3360-136-0x0000000000000000-mapping.dmp

Download
memory/4300-138-0x0000000000000000-mapping.dmp

Download
memory/4300-142-0x0000000001000000-0x0000000001138000-memory.dmp

Filesize
1.2MB

Download
memory/4300-144-0x0000000001000000-0x0000000001138000-memory.dmp

Filesize
1.2MB

Download
memory/4968-134-0x0000000000000000-mapping.dmp

Download

Analysis

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