8a3c4170a103e1695a2b70379c43266398759b3e02a841a75b08ecfa5716860d

General

Target

Build.exe
Size

701KB
MD5

0efd05c0e785394f55153d5b9c04daf5
SHA1

16e820e2f124ce21db4633379c475cff7c7448f3
SHA256

8a3c4170a103e1695a2b70379c43266398759b3e02a841a75b08ecfa5716860d
SHA512

84e2060eae231df6916273cd13b24f40145d6e2375b3b21ba1e5d685d8bd37c9cdce01c8975548b2db7e4ace15cb53d5b5883d315fa4120fed208f66f1580946
SSDEEP

6144:57A/Mm07sENIsRctX5rUvQSNj0LZOWM8yucn:5U/MbirU1Nj0LZOd8yus

Score

8^/10

persistence

Malware Config

Signatures

Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2220 set thread context of 2956	2220	Build.exe	32

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000_Classes\Local Settings	explorer.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2276	explorer.exe
Token: SeShutdownPrivilege	2276	explorer.exe
Token: SeShutdownPrivilege	2276	explorer.exe
Token: SeShutdownPrivilege	2276	explorer.exe
Token: SeShutdownPrivilege	2276	explorer.exe
Token: SeShutdownPrivilege	2276	explorer.exe
Token: SeShutdownPrivilege	2276	explorer.exe
Token: SeShutdownPrivilege	2276	explorer.exe
Token: SeShutdownPrivilege	2276	explorer.exe
Token: SeShutdownPrivilege	2276	explorer.exe
Token: SeShutdownPrivilege	2276	explorer.exe

Suspicious use of FindShellTrayWindow 27 IoCs

pid	Process
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe

Suspicious use of SendNotifyMessage 17 IoCs

pid	Process
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2276	2220	Build.exe	30
PID 2220 wrote to memory of 2276	2220	Build.exe	30
PID 2220 wrote to memory of 2276	2220	Build.exe	30
PID 2220 wrote to memory of 2276	2220	Build.exe	30
PID 2276 wrote to memory of 2108	2276	explorer.exe	31
PID 2276 wrote to memory of 2108	2276	explorer.exe	31
PID 2276 wrote to memory of 2108	2276	explorer.exe	31
PID 2220 wrote to memory of 2956	2220	Build.exe	32
PID 2220 wrote to memory of 2956	2220	Build.exe	32
PID 2220 wrote to memory of 2956	2220	Build.exe	32
PID 2220 wrote to memory of 2956	2220	Build.exe	32
PID 2220 wrote to memory of 2956	2220	Build.exe	32
PID 2220 wrote to memory of 2956	2220	Build.exe	32
PID 2220 wrote to memory of 2956	2220	Build.exe	32
PID 2220 wrote to memory of 2956	2220	Build.exe	32
PID 2220 wrote to memory of 2956	2220	Build.exe	32

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Build.exe
"C:\Users\Admin\AppData\Local\Temp\Build.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Windows\explorer.exe
  "C:\Windows\explorer.exe"
  2⤵
  - Boot or Logon Autostart Execution: Active Setup
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2276
- - C:\Windows\system32\ctfmon.exe
    ctfmon.exe
    3⤵
    PID:2108
- C:\Users\Admin\AppData\Local\Temp\Build.exe
  "C:\Users\Admin\AppData\Local\Temp\Build.exe"
  2⤵
  PID:2956

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Active Setup

1

T1547.014

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Active Setup

1

T1547.014

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2220-0-0x00000000743CE000-0x00000000743CF000-memory.dmp

Filesize
4KB

Download
memory/2220-1-0x0000000000E10000-0x0000000000EC6000-memory.dmp

Filesize
728KB

Download
memory/2220-2-0x00000000743C0000-0x0000000074AAE000-memory.dmp

Filesize
6.9MB

Download
memory/2220-16-0x00000000743C0000-0x0000000074AAE000-memory.dmp

Filesize
6.9MB

Download
memory/2276-20-0x0000000002A40000-0x0000000002A50000-memory.dmp

Filesize
64KB

Download
memory/2956-12-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2956-13-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2956-10-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2956-8-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2956-15-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2956-14-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2956-6-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2956-4-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads