a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81

General

Target

a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe
Size

300KB
MD5

4f7aacf7e5868145e8a437b5d58d08b0
SHA1

f4797649c2c064e3fa0a54f44810e3a57cf85d80
SHA256

a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81
SHA512

62fc3807ee9f92ba8ba38d871ef2a5ef488163167ac2eda88f5afa34e02487058cf4702c92901a9826474ec8b940efb070bd94a9931e949d83ed7b5a4b9dbf9c
SSDEEP

6144:nhLqlzJry8S/TTVK0RWx3+fIYENxE8AXJzEpuu/0Cd+3:nhLw8bsQA3SIDxCEpuqd+

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1552	cmd.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\SMAV = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe /cs:1 "	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\SMAV = "\"C:\\ProgramData\\1ebad21\\SecurityMasterAV.exe\" /s"	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe

Checks for any installed AV software in registry 1 TTPs 1 IoCs

Security Software Discovery

T1063

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Eset\Nod\	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1296 set thread context of 1144	1296	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe	27

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
1180	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1180	taskkill.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1296	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1296 wrote to memory of 1144	1296	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe	27
PID 1296 wrote to memory of 1144	1296	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe	27
PID 1296 wrote to memory of 1144	1296	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe	27
PID 1296 wrote to memory of 1144	1296	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe	27
PID 1296 wrote to memory of 1144	1296	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe	27
PID 1296 wrote to memory of 1144	1296	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe	27
PID 1296 wrote to memory of 1144	1296	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe	27
PID 1296 wrote to memory of 1144	1296	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe	27
PID 1296 wrote to memory of 1144	1296	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe	27
PID 1144 wrote to memory of 1180	1144	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe	28
PID 1144 wrote to memory of 1180	1144	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe	28
PID 1144 wrote to memory of 1180	1144	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe	28
PID 1144 wrote to memory of 1180	1144	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe	28
PID 1144 wrote to memory of 1552	1144	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe	40
PID 1144 wrote to memory of 1552	1144	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe	40
PID 1144 wrote to memory of 1552	1144	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe	40
PID 1144 wrote to memory of 1552	1144	a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe	40

C:\Users\Admin\AppData\Local\Temp\a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe
"C:\Users\Admin\AppData\Local\Temp\a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1296
- C:\Users\Admin\AppData\Local\Temp\a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe
  C:\Users\Admin\AppData\Local\Temp\a18b4330b99991158d7fc4d8c642d53d0aef1e15413bd16afee2be0a591f2b81.exe
  2⤵
  - Adds Run key to start application
  - Checks for any installed AV software in registry
  - Suspicious use of WriteProcessMemory
  PID:1144
- - C:\Windows\SysWOW64\taskkill.exe
    "C:\Windows\System32\taskkill.exe" /F /IM MSASCui* /IM avg* /IM ash* /IM McSA* /IM msse*
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1180
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\del.bat" >> NUL
    3⤵
    - Deletes itself
    PID:1552

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

Credentials in Files

1

T1081

Discovery

Security Software Discovery

1

T1063

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\del.bat

Filesize
183B

MD5
9a20232425c63b3c73baf4eeba4a386e

SHA1
1f418b87f41460f2371aafff067f12b0eeb0477a

SHA256
58a2389ad5b3f432ab47b07182647844322f5aee821698c74d8406b0286abe6d

SHA512
a465f3b28cb0578dfc8dbf40a5161c737c8b0e5dbfd9a46cdcb8e7e8465d9b7d379c3ee871dad7054d1a27acc51c8374a3c5deb3e6b42411019f1540d5f08a21

Download Submit
memory/1144-56-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1144-59-0x00000000759C1000-0x00000000759C3000-memory.dmp

Filesize
8KB

Download
memory/1144-60-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1144-61-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1144-63-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/1144-66-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download

Analysis

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