daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae

General

Target

daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe
Size

84KB
MD5

b61574b6846ed7c7892b0f8a9a07bf79
SHA1

71f5eca7dce975125047a5b1ce871225ace79048
SHA256

daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae
SHA512

5e5758bed93ef3f393c6af9ce006439773f3fc3ef1c05f6df9dc9bb475ae32d2d733d3b5d69d799286cdaca17d37572d097ddb8f36a46bf890d300e56fa64463
SSDEEP

1536:yr3Z5IfQmv81a7pP1xF3yX2tM/jTEwwwEiiiixM1:WJOfQm01q9X3yX2q/jTJ1

Score

9^/10

evasion upx

Malware Config

Signatures

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

resource	yara_rule
behavioral1/memory/836-0-0x0000000000400000-0x0000000000416000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/files/0x000a000000012280-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/836-5-0x0000000000400000-0x0000000000416000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2132-6-0x0000000000400000-0x0000000000416000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/836-0-0x0000000000400000-0x0000000000416000-memory.dmp	UPX
behavioral1/files/0x000a000000012280-3.dat	UPX
behavioral1/memory/836-5-0x0000000000400000-0x0000000000416000-memory.dmp	UPX
behavioral1/memory/2132-6-0x0000000000400000-0x0000000000416000-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
2876	attrib.exe

Deletes itself 1 IoCs

pid	Process
3036	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2132	ayahost.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/836-0-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral1/files/0x000a000000012280-3.dat	upx
behavioral1/memory/836-5-0x0000000000400000-0x0000000000416000-memory.dmp	upx
behavioral1/memory/2132-6-0x0000000000400000-0x0000000000416000-memory.dmp	upx

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\ayahost.exe	daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe
File opened for modification	C:\Windows\Debug\ayahost.exe	daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe
File opened for modification	C:\Windows\Debug\ayahost.exe	attrib.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	836	daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 836 wrote to memory of 2876	836	daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe	28
PID 836 wrote to memory of 2876	836	daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe	28
PID 836 wrote to memory of 2876	836	daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe	28
PID 836 wrote to memory of 2876	836	daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe	28
PID 836 wrote to memory of 3036	836	daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe	31
PID 836 wrote to memory of 3036	836	daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe	31
PID 836 wrote to memory of 3036	836	daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe	31
PID 836 wrote to memory of 3036	836	daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe	31

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2876	attrib.exe

C:\Users\Admin\AppData\Local\Temp\daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe
"C:\Users\Admin\AppData\Local\Temp\daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:836
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\ayahost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - Views/modifies file attributes
  PID:2876
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\DACA4D~1.EXE > nul
  2⤵
  - Deletes itself
  PID:3036

C:\Windows\Debug\ayahost.exe
C:\Windows\Debug\ayahost.exe
1⤵
- Executes dropped EXE
PID:2132

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\Debug\ayahost.exe

Filesize
84KB

MD5
e16ff1cb124edb1059a7736d237b7a08

SHA1
4933f98db82e6988253ac52112f6fd427a8fb27f

SHA256
872877acfad650f0d9d97fbe48f1656feb49b09306fb74de05abc7e589585856

SHA512
ecfb3f84f5595830470dc49ea3b8a513126c42e1435fe2ebaed80a8233c8ef78816be6ce2755d98a935cb651e9ae72bff596b8224bb21031fd09746ea6cd43ee

Download Submit
memory/836-0-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/836-5-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2132-6-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads