b76c769c954a976e811bb74283993ae508f3ff98753f3ac5f35037a5d0bf7fc2

General

Target

e00e260dcd3db9f92382c39152fdd820N.exe
Size

49KB
MD5

e00e260dcd3db9f92382c39152fdd820
SHA1

cfcba24a21814e1cfdd6e0c138b5dca95c047a4a
SHA256

b76c769c954a976e811bb74283993ae508f3ff98753f3ac5f35037a5d0bf7fc2
SHA512

37908f82ff253b4fd6ef65623f3c1b09ac0371968bee046e8d74fcdaf2929af342b6fc41bd697f46e17d24ad8badefc3b276c31b69db7babf1302bbf24e64cf0
SSDEEP

1536:NLI4qg9+Q/KMJqSsGpdNmLUIsWsdM5T233Z:Bb/jq0LNmLUIsWsdM5T233Z

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2676	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2672	fwehost.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2624-0-0x0000000010000000-0x000000001000E000-memory.dmp	upx
behavioral1/memory/2624-5-0x0000000010000000-0x000000001000E000-memory.dmp	upx
behavioral1/memory/2672-11-0x0000000010000000-0x000000001000E000-memory.dmp	upx
behavioral1/memory/2672-12-0x0000000010000000-0x000000001000E000-memory.dmp	upx
behavioral1/memory/2672-14-0x0000000010000000-0x000000001000E000-memory.dmp	upx
behavioral1/memory/2672-16-0x0000000010000000-0x000000001000E000-memory.dmp	upx
behavioral1/memory/2672-17-0x0000000010000000-0x000000001000E000-memory.dmp	upx
behavioral1/memory/2672-19-0x0000000010000000-0x000000001000E000-memory.dmp	upx

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\fwehost.exe	e00e260dcd3db9f92382c39152fdd820N.exe
File opened for modification	C:\Windows\Debug\fwehost.exe	e00e260dcd3db9f92382c39152fdd820N.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e00e260dcd3db9f92382c39152fdd820N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fwehost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	fwehost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	fwehost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2624	e00e260dcd3db9f92382c39152fdd820N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2624 wrote to memory of 2676	2624	e00e260dcd3db9f92382c39152fdd820N.exe	31
PID 2624 wrote to memory of 2676	2624	e00e260dcd3db9f92382c39152fdd820N.exe	31
PID 2624 wrote to memory of 2676	2624	e00e260dcd3db9f92382c39152fdd820N.exe	31
PID 2624 wrote to memory of 2676	2624	e00e260dcd3db9f92382c39152fdd820N.exe	31

C:\Users\Admin\AppData\Local\Temp\e00e260dcd3db9f92382c39152fdd820N.exe
"C:\Users\Admin\AppData\Local\Temp\e00e260dcd3db9f92382c39152fdd820N.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\E00E26~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2676

C:\Windows\Debug\fwehost.exe
C:\Windows\Debug\fwehost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:2672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

1

T1070

File Deletion

1

T1070.004

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\debug\fwehost.exe

Filesize
49KB

MD5
55874ff0803453a9bcfafa4641c30b29

SHA1
1a3ad9910546878bf9bda2b334edcb3c0591addd

SHA256
287b7b5862ba0f0dd3966742c29141801bbb7affa664807b58835dd2e254e6f9

SHA512
f2d3c1ab82bd3f3d6ac59dd070c824119910a06d44eca6c736822afefef81afd8642f051f4215e7d0730e9159d5a9a6f7b4a4403afb4f6988b6fd66d47d3c516

Download Submit
memory/2624-0-0x0000000010000000-0x000000001000E000-memory.dmp

Filesize
56KB

Download
memory/2624-5-0x0000000010000000-0x000000001000E000-memory.dmp

Filesize
56KB

Download
memory/2672-11-0x0000000010000000-0x000000001000E000-memory.dmp

Filesize
56KB

Download
memory/2672-12-0x0000000010000000-0x000000001000E000-memory.dmp

Filesize
56KB

Download
memory/2672-14-0x0000000010000000-0x000000001000E000-memory.dmp

Filesize
56KB

Download
memory/2672-16-0x0000000010000000-0x000000001000E000-memory.dmp

Filesize
56KB

Download
memory/2672-17-0x0000000010000000-0x000000001000E000-memory.dmp

Filesize
56KB

Download
memory/2672-19-0x0000000010000000-0x000000001000E000-memory.dmp

Filesize
56KB

Download

Analysis

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