cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f

General

Target

cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe
Size

1.1MB
MD5

6a5a8c18485a6aeff8bb93be025db1cd
SHA1

103bea545e9d9256aa4fd52b567ab3f05271e4aa
SHA256

cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f
SHA512

0da147bba5fe0838444b1a031c666942c48584b1627613c83a158df39bfe59ba60d19204396e1b7d6b37e14f537ade145f421f39d65d055b41189162c0e71284
SSDEEP

12288:9n8yN0Mr8VZOSzt9tzZxpwXK4Qzh+jMlWCEh/iZyzBLZiSjJ5KH2awbx3QLKwM:FPuVZOSzXFZxpwiz0wy/9BTq+x3QLs

Score

9^/10

Malware Config

Signatures

UPX dump on OEP (original entry point) 20 IoCs

resource	yara_rule
behavioral1/files/0x0034000000016122-6.dat	UPX
behavioral1/memory/3036-9-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX
behavioral1/memory/3036-16-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX
behavioral1/memory/2216-17-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX
behavioral1/memory/2044-25-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX
behavioral1/memory/2216-76-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX
behavioral1/memory/2216-77-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX
behavioral1/memory/2216-80-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX
behavioral1/memory/2216-81-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX
behavioral1/memory/2216-88-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX
behavioral1/memory/2216-89-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX
behavioral1/memory/2216-97-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX
behavioral1/memory/2216-98-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX
behavioral1/memory/2216-104-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX
behavioral1/memory/2216-105-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX
behavioral1/memory/2216-113-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX
behavioral1/memory/2216-114-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX
behavioral1/memory/2216-126-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX
behavioral1/memory/2216-127-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX
behavioral1/memory/2216-140-0x0000000000400000-0x00000000016A8000-memory.dmp	UPX

Executes dropped EXE 4 IoCs

pid	Process
2216	Isass.exe
2044	Isass.exe
2532	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe
2384	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe

Loads dropped DLL 10 IoCs

pid	Process
3036	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe
3036	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe
3036	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe
3036	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe
2044	Isass.exe
2532	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe
2384	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe
2216	Isass.exe
2216	Isass.exe
2216	Isass.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Isass.exe = "C:\\Users\\Public\\Microsoft Build\\Isass.exe"	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.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
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3036	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe
2216	Isass.exe
2044	Isass.exe
2044	Isass.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 2216	3036	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe	28
PID 3036 wrote to memory of 2216	3036	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe	28
PID 3036 wrote to memory of 2216	3036	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe	28
PID 3036 wrote to memory of 2216	3036	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe	28
PID 3036 wrote to memory of 2044	3036	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe	29
PID 3036 wrote to memory of 2044	3036	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe	29
PID 3036 wrote to memory of 2044	3036	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe	29
PID 3036 wrote to memory of 2044	3036	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe	29
PID 2044 wrote to memory of 2532	2044	Isass.exe	30
PID 2044 wrote to memory of 2532	2044	Isass.exe	30
PID 2044 wrote to memory of 2532	2044	Isass.exe	30
PID 2044 wrote to memory of 2532	2044	Isass.exe	30
PID 2044 wrote to memory of 2532	2044	Isass.exe	30
PID 2044 wrote to memory of 2532	2044	Isass.exe	30
PID 2044 wrote to memory of 2532	2044	Isass.exe	30
PID 2532 wrote to memory of 2384	2532	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe	31
PID 2532 wrote to memory of 2384	2532	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe	31
PID 2532 wrote to memory of 2384	2532	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe	31
PID 2532 wrote to memory of 2384	2532	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe	31
PID 2532 wrote to memory of 2384	2532	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe	31
PID 2532 wrote to memory of 2384	2532	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe	31
PID 2532 wrote to memory of 2384	2532	cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe	31

C:\Users\Admin\AppData\Local\Temp\cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe
"C:\Users\Admin\AppData\Local\Temp\cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3036
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  PID:2216
- C:\Users\Public\Microsoft Build\Isass.exe
  "C:\Users\Public\Microsoft Build\Isass.exe" Tablet C:\Users\Admin\AppData\Local\Temp\cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2044
- - C:\Users\Admin\AppData\Local\Temp\cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe
    "C:\Users\Admin\AppData\Local\Temp\cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2532
  - - C:\Windows\Temp\{D12813AA-6B30-40FC-87AF-6A94362DD83E}\.cr\cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe
      "C:\Windows\Temp\{D12813AA-6B30-40FC-87AF-6A94362DD83E}\.cr\cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe" -burn.clean.room="C:\Users\Admin\AppData\Local\Temp\cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe" -burn.filehandle.attached=180 -burn.filehandle.self=188
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:2384

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Public\Microsoft Build\Isass.exe

Filesize
450KB

MD5
6769f78e265852c88a6850c91391d414

SHA1
bfa7647c3c4589cc3693677a51eb9157b73e36c1

SHA256
de50d943bbf9e955a3965f742e3eeb236e5302e6ab125a597bda84b4c458b1e9

SHA512
ce25d325f8bf85e016996d26ad4cfde523bb4a3d75610e17385b887cc30d5d728e9e1e1bbe17901593f9ca6a2dfb805ea6ad66e8df885b691b441e80969add57

Download Submit
C:\Windows\Temp\{B4CF39BB-3D3F-46D9-B0C9-7970B2417B2A}\.ba\logo.png

Filesize
1KB

MD5
d6bd210f227442b3362493d046cea233

SHA1
ff286ac8370fc655aea0ef35e9cf0bfcb6d698de

SHA256
335a256d4779ec5dcf283d007fb56fd8211bbcaf47dcd70fe60ded6a112744ef

SHA512
464aaab9e08de610ad34b97d4076e92dc04c2cdc6669f60bfc50f0f9ce5d71c31b8943bd84cee1a04fb9ab5bbed3442bd41d9cb21a0dd170ea97c463e1ce2b5b

Download Submit
\Users\Admin\AppData\Local\Temp\cc8b7476b414acfce4a6a10437473098e7cf272e27fc1723786e631bf6d2d86f.exe

Filesize
632KB

MD5
c27046bd35c5717084bb40c7305b941a

SHA1
51510a7753dd2a1236b34b495db21ef18a74c25c

SHA256
e0bc82c13bcd1ade084a0421dab88e23e9cc5499323449e585e7dd2116951bd3

SHA512
df9dc98043ea5b86c671e769a75e569366223c5a291f5eed22f68af9783a0aa295d8bb0ee0b510767cce7961f2e501124d9fe656044766644e18682f21446214

Download Submit
\Windows\Temp\{B4CF39BB-3D3F-46D9-B0C9-7970B2417B2A}\.ba\wixstdba.dll

Filesize
191KB

MD5
eab9caf4277829abdf6223ec1efa0edd

SHA1
74862ecf349a9bedd32699f2a7a4e00b4727543d

SHA256
a4efbdb2ce55788ffe92a244cb775efd475526ef5b61ad78de2bcdfaddac7041

SHA512
45b15ade68e0a90ea7300aeb6dca9bc9e347a63dba5ce72a635957564d1bdf0b1584a5e34191916498850fc7b3b7ecfbcbfcb246b39dbf59d47f66bc825c6fd2

Download Submit
memory/2044-25-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2216-77-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2216-89-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2216-18-0x00000000003C0000-0x00000000003C1000-memory.dmp

Filesize
4KB

Download
memory/2216-140-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2216-127-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2216-126-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2216-76-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2216-114-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2216-80-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2216-81-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2216-88-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2216-17-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2216-97-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2216-98-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2216-104-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2216-105-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/2216-113-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3036-9-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download
memory/3036-10-0x0000000004670000-0x0000000005918000-memory.dmp

Filesize
18.7MB

Download
memory/3036-15-0x0000000004670000-0x0000000005918000-memory.dmp

Filesize
18.7MB

Download
memory/3036-16-0x0000000000400000-0x00000000016A8000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads