7a97a119fe76c3e9220ca86fa2cf4ce2edc41dfa5188ddbac7daed2a23e2e640

General

Target

a75ab12a448fc3cb2f23a45bb83fd205_NEAS.exe
Size

35KB
MD5

a75ab12a448fc3cb2f23a45bb83fd205
SHA1

fcf059b90949b7361c0a11e4528a135bf6ada048
SHA256

7a97a119fe76c3e9220ca86fa2cf4ce2edc41dfa5188ddbac7daed2a23e2e640
SHA512

f0d7ae59f9b1c58c359b01d77a80ed0f8881d102355ef513548ba3dc9d913ed3e6571e2c484f30ec5b39901f21ef6985da22dd57512a97f2cf8e3fd824eced4c
SSDEEP

768:M3EVdV0YXY/nckNsWheCNSdd57Do5utsp1TOIIIwjkn:lVdm5/nprh3Ny57guSTOj2

Score

8^/10

evasion upx

Malware Config

Signatures

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
2040	attrib.exe

Deletes itself 1 IoCs

pid	Process
2340	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2596	rwmhost.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2984-0-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/files/0x000d00000001226b-3.dat	upx
behavioral1/memory/2596-5-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/2984-7-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/2596-8-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/2596-14-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/2596-17-0x0000000000400000-0x0000000000417000-memory.dmp	upx
behavioral1/memory/2596-20-0x0000000000400000-0x0000000000417000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\rwmhost.exe	attrib.exe
File created	C:\Windows\Debug\rwmhost.exe	a75ab12a448fc3cb2f23a45bb83fd205_NEAS.exe
File opened for modification	C:\Windows\Debug\rwmhost.exe	a75ab12a448fc3cb2f23a45bb83fd205_NEAS.exe

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

System Information Discovery
T1082

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	rwmhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	rwmhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2984	a75ab12a448fc3cb2f23a45bb83fd205_NEAS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2984 wrote to memory of 2040	2984	a75ab12a448fc3cb2f23a45bb83fd205_NEAS.exe	28
PID 2984 wrote to memory of 2040	2984	a75ab12a448fc3cb2f23a45bb83fd205_NEAS.exe	28
PID 2984 wrote to memory of 2040	2984	a75ab12a448fc3cb2f23a45bb83fd205_NEAS.exe	28
PID 2984 wrote to memory of 2040	2984	a75ab12a448fc3cb2f23a45bb83fd205_NEAS.exe	28
PID 2984 wrote to memory of 2340	2984	a75ab12a448fc3cb2f23a45bb83fd205_NEAS.exe	31
PID 2984 wrote to memory of 2340	2984	a75ab12a448fc3cb2f23a45bb83fd205_NEAS.exe	31
PID 2984 wrote to memory of 2340	2984	a75ab12a448fc3cb2f23a45bb83fd205_NEAS.exe	31
PID 2984 wrote to memory of 2340	2984	a75ab12a448fc3cb2f23a45bb83fd205_NEAS.exe	31

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2040	attrib.exe

C:\Users\Admin\AppData\Local\Temp\a75ab12a448fc3cb2f23a45bb83fd205_NEAS.exe
"C:\Users\Admin\AppData\Local\Temp\a75ab12a448fc3cb2f23a45bb83fd205_NEAS.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2984
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\rwmhost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - Views/modifies file attributes
  PID:2040
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A75AB1~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2340

C:\Windows\Debug\rwmhost.exe
C:\Windows\Debug\rwmhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:2596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

2

T1564.001

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\Debug\rwmhost.exe

Filesize
35KB

MD5
9d590bcb294920906589ca7b920f1f19

SHA1
06c3e8ef96f23b87ca6fdff7a4be74a39cee4121

SHA256
c43c1d6b3afc56da5c7653d079fe5ca8c7dcfdd7e169f79ba611839cf5513418

SHA512
8beda0aedc7cb6dbf529e44e9a566acebf84e94bc1a54444a89fca1d64bbe404fc93faac06075562936a858d355c617c8be3b1891d544c0d9e0af0f692ef5341

Download Submit
memory/2596-5-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2596-8-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2596-14-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2596-17-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2596-20-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2984-0-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2984-7-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads