1aae2e1eda0f7430aebdf5fdbc1924b31a1c198abaee61f34f23e341f603fe3d

General

Target

1aae2e1eda0f7430aebdf5fdbc1924b31a1c198abaee61f34f23e341f603fe3d.exe
Size

82KB
MD5

3c640fc1b364a3f18ebe78eb5c74dfe4
SHA1

4452d32eae4e1267eb3c8c12d5a8a5be143d403a
SHA256

1aae2e1eda0f7430aebdf5fdbc1924b31a1c198abaee61f34f23e341f603fe3d
SHA512

fac2fe1fd26152cb00db2c04ee2da41b386a5e4e650adcb96177988fada7960b5b1c654b82d590dd3dd83c6427ab7db8716c923563ee423d94454774aa70146a
SSDEEP

1536:yr3Z5IfQmv81a7pP1xF3yX2tM/jTEwwwEiiiiR:WJOfQm01q9X3yX2q/jTA

Score

9^/10

evasion upx

Malware Config

Signatures

Detects Windows executables referencing non-Windows User-Agents 4 IoCs

resource	yara_rule
behavioral1/memory/1640-0-0x0000000000400000-0x0000000000416000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/files/0x000900000001223d-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/1640-5-0x0000000000400000-0x0000000000416000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2204-6-0x0000000000400000-0x0000000000416000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/1640-0-0x0000000000400000-0x0000000000416000-memory.dmp	UPX
behavioral1/files/0x000900000001223d-3.dat	UPX
behavioral1/memory/1640-5-0x0000000000400000-0x0000000000416000-memory.dmp	UPX
behavioral1/memory/2204-6-0x0000000000400000-0x0000000000416000-memory.dmp	UPX

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
2272	attrib.exe

Deletes itself 1 IoCs

pid	Process
1560	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2204	rwmhost.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1640-0-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral1/files/0x000900000001223d-3.dat	upx
behavioral1/memory/1640-5-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral1/memory/2204-6-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\rwmhost.exe	1aae2e1eda0f7430aebdf5fdbc1924b31a1c198abaee61f34f23e341f603fe3d.exe
File opened for modification	C:\Windows\Debug\rwmhost.exe	attrib.exe
File created	C:\Windows\Debug\rwmhost.exe	1aae2e1eda0f7430aebdf5fdbc1924b31a1c198abaee61f34f23e341f603fe3d.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	1640	1aae2e1eda0f7430aebdf5fdbc1924b31a1c198abaee61f34f23e341f603fe3d.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 2272	1640	1aae2e1eda0f7430aebdf5fdbc1924b31a1c198abaee61f34f23e341f603fe3d.exe	28
PID 1640 wrote to memory of 2272	1640	1aae2e1eda0f7430aebdf5fdbc1924b31a1c198abaee61f34f23e341f603fe3d.exe	28
PID 1640 wrote to memory of 2272	1640	1aae2e1eda0f7430aebdf5fdbc1924b31a1c198abaee61f34f23e341f603fe3d.exe	28
PID 1640 wrote to memory of 2272	1640	1aae2e1eda0f7430aebdf5fdbc1924b31a1c198abaee61f34f23e341f603fe3d.exe	28
PID 1640 wrote to memory of 1560	1640	1aae2e1eda0f7430aebdf5fdbc1924b31a1c198abaee61f34f23e341f603fe3d.exe	31
PID 1640 wrote to memory of 1560	1640	1aae2e1eda0f7430aebdf5fdbc1924b31a1c198abaee61f34f23e341f603fe3d.exe	31
PID 1640 wrote to memory of 1560	1640	1aae2e1eda0f7430aebdf5fdbc1924b31a1c198abaee61f34f23e341f603fe3d.exe	31
PID 1640 wrote to memory of 1560	1640	1aae2e1eda0f7430aebdf5fdbc1924b31a1c198abaee61f34f23e341f603fe3d.exe	31

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2272	attrib.exe

C:\Users\Admin\AppData\Local\Temp\1aae2e1eda0f7430aebdf5fdbc1924b31a1c198abaee61f34f23e341f603fe3d.exe
"C:\Users\Admin\AppData\Local\Temp\1aae2e1eda0f7430aebdf5fdbc1924b31a1c198abaee61f34f23e341f603fe3d.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1640
- 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:2272
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\1AAE2E~1.EXE > nul
  2⤵
  - Deletes itself
  PID:1560

C:\Windows\Debug\rwmhost.exe
C:\Windows\Debug\rwmhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:2204

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
82KB

MD5
ec8575213ac135c4f07dd3ef2f8bb23d

SHA1
062ad2d86ca7d79bb564833f55d587e77c0a0742

SHA256
c4a862f6d037400699eaa8fbbb58346a7b4969d05ed6bb61d90d25a8516dfbd2

SHA512
879b78f79179b1a9a8b347dd09f83f3fe1256633042a9480347ada53ea982996cd3df2754cac634291acf50f0b6fe49f6256c863b1448f93cc18f1fa1e27ae5a

Download Submit
memory/1640-0-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1640-5-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2204-6-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads