83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5

General

Target

83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe
Size

830KB
MD5

19ec58055e17d34cb2e22828df75b215
SHA1

508db116617aa1eac948f1d5325e5bbac2ec4739
SHA256

83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5
SHA512

4a319ee42c9e4109f603380062f8e575f98572c600eab092f3a5a995679fddeeea150acf7d6b5084483a14c70126933c2e000e504abb678bbced2dfb9e8ddbed
SSDEEP

12288:ZEmC92VnpahSR7BwkASR49lkQHMIWnDp2f47z4PUUhyVb4yDKUgM03qcmT1Pd2Kx:ZEF96C6BwkP2lsl8fEQemdM03zmT1P3

Score

7^/10

upx

Malware Config

Signatures

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/3052-0-0x0000000000F10000-0x000000000104C000-memory.dmp	upx
behavioral1/memory/3052-23-0x0000000000F10000-0x000000000104C000-memory.dmp	upx
behavioral1/memory/3052-33-0x0000000000F10000-0x000000000104C000-memory.dmp	upx

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\WindowsShell00322.log	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe
File opened for modification	C:\Windows\WindowSystemNewUpdate265.log	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2796	1680	WerFault.exe
2840	1028	WerFault.exe	31

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe
Token: SeDebugPrivilege	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe
Token: SeIncBasePriorityPrivilege	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 1680	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe	30
PID 3052 wrote to memory of 1680	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe	30
PID 3052 wrote to memory of 1680	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe	30
PID 3052 wrote to memory of 1680	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe	30
PID 3052 wrote to memory of 1680	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe	30
PID 3052 wrote to memory of 1680	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe	30
PID 3052 wrote to memory of 1680	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe	30
PID 1680 wrote to memory of 2796	1680	wecutil.exe	28
PID 1680 wrote to memory of 2796	1680	wecutil.exe	28
PID 1680 wrote to memory of 2796	1680	wecutil.exe	28
PID 1680 wrote to memory of 2796	1680	wecutil.exe	28
PID 3052 wrote to memory of 1028	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe	31
PID 3052 wrote to memory of 1028	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe	31
PID 3052 wrote to memory of 1028	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe	31
PID 3052 wrote to memory of 1028	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe	31
PID 3052 wrote to memory of 1028	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe	31
PID 3052 wrote to memory of 1028	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe	31
PID 3052 wrote to memory of 1028	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe	31
PID 1028 wrote to memory of 2840	1028	msdt.exe	32
PID 1028 wrote to memory of 2840	1028	msdt.exe	32
PID 1028 wrote to memory of 2840	1028	msdt.exe	32
PID 1028 wrote to memory of 2840	1028	msdt.exe	32
PID 3052 wrote to memory of 2756	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe	34
PID 3052 wrote to memory of 2756	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe	34
PID 3052 wrote to memory of 2756	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe	34
PID 3052 wrote to memory of 2756	3052	83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe	34

C:\Users\Admin\AppData\Local\Temp\83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe
"C:\Users\Admin\AppData\Local\Temp\83604c0855b33f980ccdf058e6c7ef6bf97475f91b72344bc2c49726773995b5.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Windows\SysWOW64\wecutil.exe
  "C:\Windows\SysWOW64\wecutil.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1680
- C:\Windows\SysWOW64\msdt.exe
  "C:\Windows\SysWOW64\msdt.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1028
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1028 -s 224
    3⤵
    - Program crash
    PID:2840
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\83604C~1.EXE > nul
  2⤵
  PID:2756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1680 -s 108
1⤵
- Program crash
PID:2796

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1028-12-0x0000000000320000-0x000000000042D000-memory.dmp

Filesize
1.1MB

Download
memory/1680-6-0x0000000000100000-0x000000000020D000-memory.dmp

Filesize
1.1MB

Download
memory/1680-4-0x0000000000100000-0x000000000020D000-memory.dmp

Filesize
1.1MB

Download
memory/1680-2-0x0000000000100000-0x000000000020D000-memory.dmp

Filesize
1.1MB

Download
memory/1680-3-0x0000000000100000-0x000000000020D000-memory.dmp

Filesize
1.1MB

Download
memory/3052-15-0x0000000010000000-0x00000000100FD000-memory.dmp

Filesize
1012KB

Download
memory/3052-0-0x0000000000F10000-0x000000000104C000-memory.dmp

Filesize
1.2MB

Download
memory/3052-24-0x0000000010000000-0x00000000100FD000-memory.dmp

Filesize
1012KB

Download
memory/3052-23-0x0000000000F10000-0x000000000104C000-memory.dmp

Filesize
1.2MB

Download
memory/3052-27-0x0000000010000000-0x00000000100FD000-memory.dmp

Filesize
1012KB

Download
memory/3052-30-0x0000000010000000-0x00000000100FD000-memory.dmp

Filesize
1012KB

Download
memory/3052-29-0x0000000010000000-0x00000000100FD000-memory.dmp

Filesize
1012KB

Download
memory/3052-33-0x0000000000F10000-0x000000000104C000-memory.dmp

Filesize
1.2MB

Download
memory/3052-36-0x0000000010000000-0x00000000100FD000-memory.dmp

Filesize
1012KB

Download
memory/3052-49-0x0000000010000000-0x00000000100FD000-memory.dmp

Filesize
1012KB

Download

Analysis

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