90ae15f8416ef6d07adff15ed8cb0655eb3efeb345e8099b6848c4acebcbfcee

Analysis

max time kernel
0s
max time network
118s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
05/01/2024, 09:00

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General

Target

434868e3e9110f4b1dd8612189482131.exe
Size

97KB
MD5

434868e3e9110f4b1dd8612189482131
SHA1

f2caed1c8f9b009c7d33c56b0e16ada2a1d50854
SHA256

90ae15f8416ef6d07adff15ed8cb0655eb3efeb345e8099b6848c4acebcbfcee
SHA512

be60746cc82d7f4169b9b80827b554d5a4a9b6ade886950d09885a494014e261e706857da159d620a878d84c504427bf480fbf93c7a28c9940785fe0cebd9bff
SSDEEP

3072:+7m32cZ8UtE2UvMzSKMLTQ7ja8qULZsJg/:+K3fo5yo3Q7ja8qe

Score

7^/10

adware discovery persistence stealer upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2588	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2948	PostTip.exe

Loads dropped DLL 6 IoCs

pid	Process
2904	regsvr32.exe
2968	434868e3e9110f4b1dd8612189482131.exe
2968	434868e3e9110f4b1dd8612189482131.exe
2948	PostTip.exe
2948	PostTip.exe
2948	PostTip.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2968-26-0x0000000000400000-0x0000000000448000-memory.dmp	upx
behavioral1/memory/2968-1-0x00000000003A0000-0x00000000003E8000-memory.dmp	upx
behavioral1/memory/2968-0-0x0000000000400000-0x0000000000448000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\PostTip = "C:\\Program Files (x86)\\PostTip\\PostTip.exe"	PostTip.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Installs/modifies Browser Helper Object 2 TTPs 1 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{C4BF6897-41A2-454b-AC3B-437F30BEA671}	regsvr32.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\PostTip\PostTip.exe	434868e3e9110f4b1dd8612189482131.exe
File created	C:\Program Files (x86)\PostTip\PostTip.dll	434868e3e9110f4b1dd8612189482131.exe
File created	C:\Program Files (x86)\PostTip\uninstall.exe	434868e3e9110f4b1dd8612189482131.exe

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

System Information Discovery
T1082

Modifies registry class 46 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988}\1.0\ = "SideTab 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\TypeLib\ = "{A12EF54F-2691-4C32-AC1B-F65D144A3988}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C4BF6897-41A2-454b-AC3B-437F30BEA671}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C4BF6897-41A2-454b-AC3B-437F30BEA671}\VersionIndependentProgID\ = "SideTab.SideTabCtl"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C4BF6897-41A2-454b-AC3B-437F30BEA671}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\ = "ISideTabCtl"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl.1\CLSID\ = "{C4BF6897-41A2-454b-AC3B-437F30BEA671}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C4BF6897-41A2-454b-AC3B-437F30BEA671}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl.1\ = "SideTabCtl Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C4BF6897-41A2-454b-AC3B-437F30BEA671}\InprocServer32\ = "C:\\Program Files (x86)\\PostTip\\PostTip.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C4BF6897-41A2-454b-AC3B-437F30BEA671}\ = "PostTip"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl\ = "SideTabCtl Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl\CLSID\ = "{C4BF6897-41A2-454b-AC3B-437F30BEA671}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl\CurVer	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C4BF6897-41A2-454b-AC3B-437F30BEA671}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C4BF6897-41A2-454b-AC3B-437F30BEA671}\TypeLib\ = "{A12EF54F-2691-4C32-AC1B-F65D144A3988}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988}\1.0\0\win32\ = "C:\\Program Files (x86)\\PostTip\\PostTip.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C4BF6897-41A2-454b-AC3B-437F30BEA671}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\ = "ISideTabCtl"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C4BF6897-41A2-454b-AC3B-437F30BEA671}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C4BF6897-41A2-454b-AC3B-437F30BEA671}\ProgID\ = "SideTab.SideTabCtl.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{C4BF6897-41A2-454b-AC3B-437F30BEA671}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{A12EF54F-2691-4C32-AC1B-F65D144A3988}\1.0\HELPDIR\ = "C:\\Program Files (x86)\\PostTip\\"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}\TypeLib\ = "{A12EF54F-2691-4C32-AC1B-F65D144A3988}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\SideTab.SideTabCtl\CurVer\ = "SideTab.SideTabCtl.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E2B006B6-159A-4384-B05C-4B5511C16354}	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2968	434868e3e9110f4b1dd8612189482131.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeRestorePrivilege	2968	434868e3e9110f4b1dd8612189482131.exe
Token: SeBackupPrivilege	2968	434868e3e9110f4b1dd8612189482131.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2968	434868e3e9110f4b1dd8612189482131.exe
2968	434868e3e9110f4b1dd8612189482131.exe
2948	PostTip.exe
2948	PostTip.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2968 wrote to memory of 2904	2968	434868e3e9110f4b1dd8612189482131.exe	20
PID 2968 wrote to memory of 2904	2968	434868e3e9110f4b1dd8612189482131.exe	20
PID 2968 wrote to memory of 2904	2968	434868e3e9110f4b1dd8612189482131.exe	20
PID 2968 wrote to memory of 2904	2968	434868e3e9110f4b1dd8612189482131.exe	20
PID 2968 wrote to memory of 2904	2968	434868e3e9110f4b1dd8612189482131.exe	20
PID 2968 wrote to memory of 2904	2968	434868e3e9110f4b1dd8612189482131.exe	20
PID 2968 wrote to memory of 2904	2968	434868e3e9110f4b1dd8612189482131.exe	20
PID 2968 wrote to memory of 2948	2968	434868e3e9110f4b1dd8612189482131.exe	19
PID 2968 wrote to memory of 2948	2968	434868e3e9110f4b1dd8612189482131.exe	19
PID 2968 wrote to memory of 2948	2968	434868e3e9110f4b1dd8612189482131.exe	19
PID 2968 wrote to memory of 2948	2968	434868e3e9110f4b1dd8612189482131.exe	19
PID 2968 wrote to memory of 2948	2968	434868e3e9110f4b1dd8612189482131.exe	19
PID 2968 wrote to memory of 2948	2968	434868e3e9110f4b1dd8612189482131.exe	19
PID 2968 wrote to memory of 2948	2968	434868e3e9110f4b1dd8612189482131.exe	19
PID 2968 wrote to memory of 2588	2968	434868e3e9110f4b1dd8612189482131.exe	18
PID 2968 wrote to memory of 2588	2968	434868e3e9110f4b1dd8612189482131.exe	18
PID 2968 wrote to memory of 2588	2968	434868e3e9110f4b1dd8612189482131.exe	18
PID 2968 wrote to memory of 2588	2968	434868e3e9110f4b1dd8612189482131.exe	18
PID 2968 wrote to memory of 2588	2968	434868e3e9110f4b1dd8612189482131.exe	18
PID 2968 wrote to memory of 2588	2968	434868e3e9110f4b1dd8612189482131.exe	18
PID 2968 wrote to memory of 2588	2968	434868e3e9110f4b1dd8612189482131.exe	18
PID 2948 wrote to memory of 2564	2948	PostTip.exe	17
PID 2948 wrote to memory of 2564	2948	PostTip.exe	17
PID 2948 wrote to memory of 2564	2948	PostTip.exe	17
PID 2948 wrote to memory of 2564	2948	PostTip.exe	17
PID 2948 wrote to memory of 2564	2948	PostTip.exe	17
PID 2948 wrote to memory of 2564	2948	PostTip.exe	17
PID 2948 wrote to memory of 2564	2948	PostTip.exe	17

C:\Users\Admin\AppData\Local\Temp\434868e3e9110f4b1dd8612189482131.exe
"C:\Users\Admin\AppData\Local\Temp\434868e3e9110f4b1dd8612189482131.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2968
- C:\Windows\SysWOW64\cmd.exe
  cmd /c \DelUS.bat
  2⤵
  - Deletes itself
  PID:2588
- C:\Program Files (x86)\PostTip\PostTip.exe
  "C:\Program Files (x86)\PostTip\PostTip.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2948
- C:\Windows\SysWOW64\regsvr32.exe
  regsvr32 /s "C:\Program Files (x86)\PostTip\PostTip.dll"
  2⤵
  - Loads dropped DLL
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:2904

C:\Windows\SysWOW64\regsvr32.exe
regsvr32 /s "C:\Program Files (x86)\PostTip\PostTip.dll"
1⤵
PID:2564

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Browser Extensions

T1176

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\DelUS.bat

Filesize
243B

MD5
658e675316e831edd1860e1d1c0ee2e9

SHA1
4bcafa8b2300a39e127e231257a207cc224c2d53

SHA256
6396aa960a07c812e6399f7e5fb97993940ff2d3d542e9d4db2002c6dc6b727f

SHA512
72b92c85e6fc6211dfb26e2f922c22ea1004f22224dd87504c6b8e1b48a06bf14f53d3282d8aa92bcf447b8bd3727346f0b1d7fe7ee616b39f949de8a373d5f8

Download Submit
C:\Program Files (x86)\PostTip\PostTip.dll

Filesize
20KB

MD5
f5253fa1969187f737544503a8f997f7

SHA1
fbb910f6dc8eff7d53dd0323870750df1f06ad7c

SHA256
3bba79e2e78129f372364d3ba37309c4d48a286c52f26b17b5ec9bdd40cabcad

SHA512
d6b4f17e8d155a247fe4d53a9b1664efbf989d577e4896b0a0dd4f9054fe97764b47e1420e3fb050cb08d6f74137c449411a8fb45849b7b70d7d777b34bd4f0f

Download Submit
C:\Program Files (x86)\PostTip\PostTip.exe

Filesize
33KB

MD5
a8c3d5898b69246333d8cfa021bbe399

SHA1
6f5b171a93cc1c2e5a201751cd8ac9c43dbe9a88

SHA256
8802cbbc4785fcd9e6ad0f163804f8cf49f9129a893c6bca15fec2d446ff5c04

SHA512
392cd8cddbf7d540b235eb1b10e790106d1bbf7c14a84419ceb1bbebed1d96131313fe59881f010ad58bd121d1700bb59578b8fea81dde4c81ec3980cadeeb86

Download Submit
C:\Program Files (x86)\PostTip\PostTip.exe

Filesize
9KB

MD5
3e450dcebb7acd69dff73dfe3aa8899e

SHA1
28f1fd6667b4beaac56fb2b7583db7b6614cc9ec

SHA256
378774c4a122238011c7f46692ea008a338d16ac2caadbe3275e9405d777e18b

SHA512
6610e1f630368977bd3427d6202b162689d87fe3ac83bb1dc537ac4a8a7acd21ae447d4cfbe2d6507b762ae345d170b85669ce450d5c7f7aa8e65655345da60a

Download Submit
\Program Files (x86)\PostTip\PostTip.dll

Filesize
45KB

MD5
f32f15773ac237431735793cf54a589b

SHA1
32c101c92e28103c370ddb89f35d7b8509f83bae

SHA256
a99a2f6074dfa9e55a95ea894081d3ecc32ac19ee572c3ad554a083282e204a2

SHA512
1e522f73922a79ef9af0bb8d8d066ca322b64f60ec97001bace5cc822dd88b0e09c4111fec63f27c2340de4f167dd5adeae5eab0d832a2bd1fafab19f42d55a9

Download Submit
\Program Files (x86)\PostTip\PostTip.dll

Filesize
65KB

MD5
8437914f9da1dc20b6439d9d901ff14b

SHA1
7b931496603c585ee76e4c5715d7507bb82e5f83

SHA256
12422e49396b3352538bae8982ada75f9d81a253292f6f9189d7a79b9ac208be

SHA512
994216e74809b50f0f0e29c31aedc4f083a5d1c564c10c8e19d97331b8c925430e3e1906e1f2ef61933926f0bf39ef9b7c8686735b5880fcd6d4d04734cb9b3a

Download Submit
\Program Files (x86)\PostTip\PostTip.exe

Filesize
38KB

MD5
c2b5be376cac31c0b01603105ae4ea89

SHA1
4fcfa0181ca5478103c6999199957be40f4a937b

SHA256
8ec9ca043b655d4bf868ccd7d9d5fdd4e23ad8610aed2fb983370437b7851feb

SHA512
d17e798a414a6d2295f13339a10151f2a34cff5a7d6c81862c26a0c4ac831bf9f867f9f2bf028fa15f189a93f8d8883a334a9857a33bcabac916376267c9da72

Download Submit
memory/2968-2-0x00000000003A0000-0x00000000003E8000-memory.dmp

Filesize
288KB

Download
memory/2968-27-0x00000000003A0000-0x00000000003A2000-memory.dmp

Filesize
8KB

Download
memory/2968-26-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2968-1-0x00000000003A0000-0x00000000003E8000-memory.dmp

Filesize
288KB

Download
memory/2968-0-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download