05fb91f442ae1f7b1ee14d935fec13e9a68d1d8eae593a7af82a7a3239e2137b

Analysis

max time kernel
63s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
01/01/2024, 10:15

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General

Target

3c9789e1ee979134439cd5049104cb88.exe
Size

49KB
MD5

3c9789e1ee979134439cd5049104cb88
SHA1

44957eb4b1dd6219db7abf2c579817d237e9e8f7
SHA256

05fb91f442ae1f7b1ee14d935fec13e9a68d1d8eae593a7af82a7a3239e2137b
SHA512

5131a3ba6aadc6547ce4b31c823ed9bcb13e23cc709024d4e6fd28c16756aa4fc62f5bdc95f15163822ee969be092be7b6d3e1f2e509356993760db48fd7ab47
SSDEEP

1536:8t9Wlg7w0P4EgmbJS6N+PmSSLounch18xt3djjr3s:i9aZ0PXNh9LVWKxXP3s

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\userinit = "C:\\Windows\\system32\\oembios.exe,"	3c9789e1ee979134439cd5049104cb88.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\oembios.exe	3c9789e1ee979134439cd5049104cb88.exe
File created	C:\Windows\SysWOW64\oembios.exe	3c9789e1ee979134439cd5049104cb88.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2884	3c9789e1ee979134439cd5049104cb88.exe
2884	3c9789e1ee979134439cd5049104cb88.exe
2884	3c9789e1ee979134439cd5049104cb88.exe
2884	3c9789e1ee979134439cd5049104cb88.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2884	3c9789e1ee979134439cd5049104cb88.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3
PID 2884 wrote to memory of 612	2884	3c9789e1ee979134439cd5049104cb88.exe	3

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:612

C:\Users\Admin\AppData\Local\Temp\3c9789e1ee979134439cd5049104cb88.exe
"C:\Users\Admin\AppData\Local\Temp\3c9789e1ee979134439cd5049104cb88.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/612-11-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/612-16-0x0000000008390000-0x00000000083B6000-memory.dmp

Filesize
152KB

Download
memory/612-26-0x00000000083F0000-0x0000000008416000-memory.dmp

Filesize
152KB

Download
memory/612-41-0x0000000008480000-0x00000000084A6000-memory.dmp

Filesize
152KB

Download
memory/612-51-0x00000000084E0000-0x0000000008506000-memory.dmp

Filesize
152KB

Download
memory/612-46-0x00000000084B0000-0x00000000084D6000-memory.dmp

Filesize
152KB

Download
memory/612-36-0x0000000008450000-0x0000000008476000-memory.dmp

Filesize
152KB

Download
memory/612-31-0x0000000008420000-0x0000000008446000-memory.dmp

Filesize
152KB

Download
memory/612-61-0x0000000008540000-0x0000000008566000-memory.dmp

Filesize
152KB

Download
memory/612-66-0x0000000008570000-0x0000000008596000-memory.dmp

Filesize
152KB

Download
memory/612-71-0x00000000085A0000-0x00000000085C6000-memory.dmp

Filesize
152KB

Download
memory/612-76-0x00000000085D0000-0x00000000085F6000-memory.dmp

Filesize
152KB

Download
memory/612-86-0x0000000008630000-0x0000000008656000-memory.dmp

Filesize
152KB

Download
memory/612-91-0x0000000008660000-0x0000000008686000-memory.dmp

Filesize
152KB

Download
memory/612-96-0x0000000008690000-0x00000000086B6000-memory.dmp

Filesize
152KB

Download
memory/612-106-0x00000000086F0000-0x0000000008716000-memory.dmp

Filesize
152KB

Download
memory/612-111-0x0000000008720000-0x0000000008746000-memory.dmp

Filesize
152KB

Download
memory/612-121-0x0000000008780000-0x00000000087A6000-memory.dmp

Filesize
152KB

Download
memory/612-116-0x0000000008750000-0x0000000008776000-memory.dmp

Filesize
152KB

Download
memory/612-101-0x00000000086C0000-0x00000000086E6000-memory.dmp

Filesize
152KB

Download
memory/612-126-0x00000000087B0000-0x00000000087D6000-memory.dmp

Filesize
152KB

Download
memory/612-136-0x0000000008810000-0x0000000008836000-memory.dmp

Filesize
152KB

Download
memory/612-141-0x0000000008840000-0x0000000008866000-memory.dmp

Filesize
152KB

Download
memory/612-151-0x00000000088A0000-0x00000000088C6000-memory.dmp

Filesize
152KB

Download
memory/612-156-0x00000000088D0000-0x00000000088F6000-memory.dmp

Filesize
152KB

Download
memory/612-161-0x0000000008900000-0x0000000008926000-memory.dmp

Filesize
152KB

Download
memory/612-171-0x0000000008960000-0x0000000008986000-memory.dmp

Filesize
152KB

Download
memory/612-176-0x0000000008990000-0x00000000089B6000-memory.dmp

Filesize
152KB

Download
memory/612-186-0x00000000089F0000-0x0000000008A16000-memory.dmp

Filesize
152KB

Download
memory/612-181-0x00000000089C0000-0x00000000089E6000-memory.dmp

Filesize
152KB

Download
memory/612-196-0x0000000008A50000-0x0000000008A76000-memory.dmp

Filesize
152KB

Download
memory/612-201-0x0000000008A80000-0x0000000008AA6000-memory.dmp

Filesize
152KB

Download
memory/612-211-0x0000000008AE0000-0x0000000008B06000-memory.dmp

Filesize
152KB

Download
memory/612-216-0x0000000008B10000-0x0000000008B36000-memory.dmp

Filesize
152KB

Download
memory/612-226-0x0000000008B70000-0x0000000008B96000-memory.dmp

Filesize
152KB

Download
memory/612-231-0x0000000008BA0000-0x0000000008BC6000-memory.dmp

Filesize
152KB

Download
memory/612-241-0x0000000008C00000-0x0000000008C26000-memory.dmp

Filesize
152KB

Download
memory/612-246-0x0000000008C30000-0x0000000008C56000-memory.dmp

Filesize
152KB

Download
memory/612-256-0x0000000008C90000-0x0000000008CB6000-memory.dmp

Filesize
152KB

Download
memory/612-251-0x0000000008C60000-0x0000000008C86000-memory.dmp

Filesize
152KB

Download
memory/612-236-0x0000000008BD0000-0x0000000008BF6000-memory.dmp

Filesize
152KB

Download
memory/612-266-0x0000000008CF0000-0x0000000008D16000-memory.dmp

Filesize
152KB

Download
memory/612-271-0x0000000008D20000-0x0000000008D46000-memory.dmp

Filesize
152KB

Download
memory/612-281-0x0000000008D80000-0x0000000008DA6000-memory.dmp

Filesize
152KB

Download
memory/612-286-0x0000000008DB0000-0x0000000008DD6000-memory.dmp

Filesize
152KB

Download
memory/612-291-0x0000000008DE0000-0x0000000008E06000-memory.dmp

Filesize
152KB

Download
memory/612-296-0x0000000008E10000-0x0000000008E36000-memory.dmp

Filesize
152KB

Download
memory/612-301-0x0000000008E40000-0x0000000008E66000-memory.dmp

Filesize
152KB

Download
memory/612-306-0x0000000008E70000-0x0000000008E96000-memory.dmp

Filesize
152KB

Download
memory/612-316-0x0000000008ED0000-0x0000000008EF6000-memory.dmp

Filesize
152KB

Download
memory/612-321-0x0000000008F00000-0x0000000008F26000-memory.dmp

Filesize
152KB

Download
memory/612-311-0x0000000008EA0000-0x0000000008EC6000-memory.dmp

Filesize
152KB

Download
memory/612-276-0x0000000008D50000-0x0000000008D76000-memory.dmp

Filesize
152KB

Download
memory/612-261-0x0000000008CC0000-0x0000000008CE6000-memory.dmp

Filesize
152KB

Download
memory/612-221-0x0000000008B40000-0x0000000008B66000-memory.dmp

Filesize
152KB

Download
memory/612-206-0x0000000008AB0000-0x0000000008AD6000-memory.dmp

Filesize
152KB

Download
memory/612-191-0x0000000008A20000-0x0000000008A46000-memory.dmp

Filesize
152KB

Download
memory/612-166-0x0000000008930000-0x0000000008956000-memory.dmp

Filesize
152KB

Download
memory/612-146-0x0000000008870000-0x0000000008896000-memory.dmp

Filesize
152KB

Download
memory/612-131-0x00000000087E0000-0x0000000008806000-memory.dmp

Filesize
152KB

Download
memory/612-81-0x0000000008600000-0x0000000008626000-memory.dmp

Filesize
152KB

Download
memory/612-56-0x0000000008510000-0x0000000008536000-memory.dmp

Filesize
152KB

Download
memory/612-21-0x00000000083C0000-0x00000000083E6000-memory.dmp

Filesize
152KB

Download
memory/2884-0-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2884-1-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2884-2-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download