639c4e1a77e91073efcd55180cc8171062b49442cb829ccc960688cdb34c1b05

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/03/2024, 16:53

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General

Target

bc5191f949e6580061ae90f56d83266b.exe
Size

24KB
MD5

bc5191f949e6580061ae90f56d83266b
SHA1

4c202f0e14bd3b9132895e838085c47bb2251077
SHA256

639c4e1a77e91073efcd55180cc8171062b49442cb829ccc960688cdb34c1b05
SHA512

deb1f045824d2629bcfcffe7431321a6f3cc669e0ae805904097238571c460fadd21b0cdb0a2afc92b97dccbe46d5c4448e0da147026b47b81f2e27559ddaa08
SSDEEP

384:E3eVES+/xwGkRKJKgr6slM61qmTTMVF9/q5/0:bGS+ZfbJKgHO8qYoA8

Score

6^/10

persistence

Malware Config

Signatures

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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Start GeekBuddy = "C:\\Program Files\\Common Files\\Microsoft Shared\\Web Folders\\1033\\spoolsv.exe"	bc5191f949e6580061ae90f56d83266b.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\Microsoft Shared\Web Folders\1033\spoolsv.exe	bc5191f949e6580061ae90f56d83266b.exe

Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery

T1057

pid	Process
2576	tasklist.exe

Gathers network information 2 TTPs 2 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
3032	ipconfig.exe
2520	NETSTAT.EXE

Runs net.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2576	tasklist.exe
Token: SeDebugPrivilege	2520	NETSTAT.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2232	bc5191f949e6580061ae90f56d83266b.exe
2232	bc5191f949e6580061ae90f56d83266b.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2232 wrote to memory of 1692	2232	bc5191f949e6580061ae90f56d83266b.exe	28
PID 2232 wrote to memory of 1692	2232	bc5191f949e6580061ae90f56d83266b.exe	28
PID 2232 wrote to memory of 1692	2232	bc5191f949e6580061ae90f56d83266b.exe	28
PID 2232 wrote to memory of 1692	2232	bc5191f949e6580061ae90f56d83266b.exe	28
PID 1692 wrote to memory of 2716	1692	cmd.exe	30
PID 1692 wrote to memory of 2716	1692	cmd.exe	30
PID 1692 wrote to memory of 2716	1692	cmd.exe	30
PID 1692 wrote to memory of 2716	1692	cmd.exe	30
PID 1692 wrote to memory of 3032	1692	cmd.exe	31
PID 1692 wrote to memory of 3032	1692	cmd.exe	31
PID 1692 wrote to memory of 3032	1692	cmd.exe	31
PID 1692 wrote to memory of 3032	1692	cmd.exe	31
PID 1692 wrote to memory of 2576	1692	cmd.exe	32
PID 1692 wrote to memory of 2576	1692	cmd.exe	32
PID 1692 wrote to memory of 2576	1692	cmd.exe	32
PID 1692 wrote to memory of 2576	1692	cmd.exe	32
PID 1692 wrote to memory of 2368	1692	cmd.exe	34
PID 1692 wrote to memory of 2368	1692	cmd.exe	34
PID 1692 wrote to memory of 2368	1692	cmd.exe	34
PID 1692 wrote to memory of 2368	1692	cmd.exe	34
PID 2368 wrote to memory of 2124	2368	net.exe	35
PID 2368 wrote to memory of 2124	2368	net.exe	35
PID 2368 wrote to memory of 2124	2368	net.exe	35
PID 2368 wrote to memory of 2124	2368	net.exe	35
PID 1692 wrote to memory of 2520	1692	cmd.exe	36
PID 1692 wrote to memory of 2520	1692	cmd.exe	36
PID 1692 wrote to memory of 2520	1692	cmd.exe	36
PID 1692 wrote to memory of 2520	1692	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\bc5191f949e6580061ae90f56d83266b.exe
"C:\Users\Admin\AppData\Local\Temp\bc5191f949e6580061ae90f56d83266b.exe"
1⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2232
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ver >c:\windows\temp\flash.log & cmd /c set >>c:\windows\temp\flash.log & ipconfig /all >>c:\windows\temp\flash.log & tasklist >>c:\windows\temp\flash.log & net start>>c:\windows\temp\flash.log & netstat -an >>c:\windows\temp\flash.log
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1692
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c set
    3⤵
    PID:2716
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /all
    3⤵
    - Gathers network information
    PID:3032
- - C:\Windows\SysWOW64\tasklist.exe
    tasklist
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:2576
- - C:\Windows\SysWOW64\net.exe
    net start
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2368
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 start
      4⤵
      PID:2124
- - C:\Windows\SysWOW64\NETSTAT.EXE
    netstat -an
    3⤵
    - Gathers network information
    - Suspicious use of AdjustPrivilegeToken
    PID:2520

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Process Discovery

T1057

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\??\c:\windows\temp\flash.log

Filesize
8KB

MD5
2ff869d131053c0d3ca070da2cd9fb91

SHA1
9fbe1bc6bd6accf0c4f0421aa8fc3ce3569750d8

SHA256
c205e3df3f0d139919a6f8f5bff4a76f214d488d0f8736c6a222dddedd3a0414

SHA512
287405345dde0127739e1c90031c1ab0efc5c6ece69ba792489ba0c8316b6f2caf18f1b30d3359f6809d62b0cad7bef5bc3b64af341d0026c06bba5ee839d89b

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads