blackmoon | a299fe9f7c5902b0faa026ef0c9aa59292dfe3fa9983e1abd801472cb2d3e26d

Analysis

max time kernel
41s
max time network
44s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
29/09/2022, 10:58

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General

Target

tmp.exe
Size

107KB
MD5

5b2dbd6f2668a6d4a304007a7554806c
SHA1

cb40d7f273af19a4474dbe0a96bddb68a8e535df
SHA256

a299fe9f7c5902b0faa026ef0c9aa59292dfe3fa9983e1abd801472cb2d3e26d
SHA512

8226086ac4e1f6a3c40d3b8f69d88d78262696a51101eb94aec3b82f6abb35e633da640dc8826ab2753009bf12d40f51a0e48ccc32f738d69c0e5b0124b72281
SSDEEP

1536:swSFvo7h95drZApq4nVNlobB+3aA4XrPZlfyo63EnOGkE+Z7XbT7mNhcbAsgFnxM:b93Inri+KAo/xOZ1X7bbAsE

Score

10^/10

blackmoon banker persistence trojan upx

Malware Config

Signatures

Blackmoon, KrBanker
Blackmoon also known as KrBanker is banking trojan first discovered in early 2014.
trojan banker blackmoon

Detect Blackmoon payload 2 IoCs

resource	yara_rule
behavioral1/memory/1408-55-0x0000000000400000-0x0000000000463000-memory.dmp	family_blackmoon
behavioral1/memory/1408-69-0x0000000000400000-0x0000000000463000-memory.dmp	family_blackmoon

Executes dropped EXE 2 IoCs

pid	Process
1072	z.exe
2028	z.exe

Sets service image path in registry 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\b\ImagePath = "\\??\\C:\\Windows\\temp\\b.sys"	z.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\f\ImagePath = "\\??\\C:\\Windows\\temp\\f.sys"	z.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1408-55-0x0000000000400000-0x0000000000463000-memory.dmp	upx
behavioral1/memory/1408-69-0x0000000000400000-0x0000000000463000-memory.dmp	upx

Loads dropped DLL 1 IoCs

pid	Process
1620	cmd.exe

Kills process with taskkill 4 IoCs

evasion

pid	Process
1652	taskkill.exe
516	taskkill.exe
904	taskkill.exe
1644	taskkill.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
1072	z.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	904	taskkill.exe
Token: SeDebugPrivilege	1644	taskkill.exe
Token: SeDebugPrivilege	1652	taskkill.exe
Token: SeDebugPrivilege	516	taskkill.exe
Token: SeLoadDriverPrivilege	1072	z.exe
Token: SeLoadDriverPrivilege	2028	z.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1408	tmp.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1408 wrote to memory of 1380	1408	tmp.exe	26
PID 1408 wrote to memory of 1380	1408	tmp.exe	26
PID 1408 wrote to memory of 1380	1408	tmp.exe	26
PID 1408 wrote to memory of 1380	1408	tmp.exe	26
PID 1380 wrote to memory of 904	1380	cmd.exe	28
PID 1380 wrote to memory of 904	1380	cmd.exe	28
PID 1380 wrote to memory of 904	1380	cmd.exe	28
PID 1380 wrote to memory of 904	1380	cmd.exe	28
PID 1380 wrote to memory of 1644	1380	cmd.exe	30
PID 1380 wrote to memory of 1644	1380	cmd.exe	30
PID 1380 wrote to memory of 1644	1380	cmd.exe	30
PID 1380 wrote to memory of 1644	1380	cmd.exe	30
PID 1380 wrote to memory of 1652	1380	cmd.exe	32
PID 1380 wrote to memory of 1652	1380	cmd.exe	32
PID 1380 wrote to memory of 1652	1380	cmd.exe	32
PID 1380 wrote to memory of 1652	1380	cmd.exe	32
PID 1408 wrote to memory of 1620	1408	tmp.exe	33
PID 1408 wrote to memory of 1620	1408	tmp.exe	33
PID 1408 wrote to memory of 1620	1408	tmp.exe	33
PID 1408 wrote to memory of 1620	1408	tmp.exe	33
PID 1620 wrote to memory of 1072	1620	cmd.exe	36
PID 1620 wrote to memory of 1072	1620	cmd.exe	36
PID 1620 wrote to memory of 1072	1620	cmd.exe	36
PID 1620 wrote to memory of 1072	1620	cmd.exe	36
PID 1380 wrote to memory of 516	1380	cmd.exe	37
PID 1380 wrote to memory of 516	1380	cmd.exe	37
PID 1380 wrote to memory of 516	1380	cmd.exe	37
PID 1380 wrote to memory of 516	1380	cmd.exe	37
PID 1408 wrote to memory of 268	1408	tmp.exe	39
PID 1408 wrote to memory of 268	1408	tmp.exe	39
PID 1408 wrote to memory of 268	1408	tmp.exe	39
PID 1408 wrote to memory of 268	1408	tmp.exe	39
PID 268 wrote to memory of 2028	268	cmd.exe	41
PID 268 wrote to memory of 2028	268	cmd.exe	41
PID 268 wrote to memory of 2028	268	cmd.exe	41
PID 268 wrote to memory of 2028	268	cmd.exe	41

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1408
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1380
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /F /IM WmiPrvSE.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:904
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /F /IM WmiPrvSE.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1644
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /F /IM WmiPrvSE.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1652
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /F /IM WmiPrvSE.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:516
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c z.exe f.sys b.sys
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1620
- - C:\Windows\temp\z.exe
    z.exe f.sys b.sys
    3⤵
    - Executes dropped EXE
    - Sets service image path in registry
    - Suspicious behavior: LoadsDriver
    - Suspicious use of AdjustPrivilegeToken
    PID:1072
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c z.exe b.sys
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:268
- - C:\Windows\temp\z.exe
    z.exe b.sys
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2028

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Temp\z.exe

Filesize
19KB

MD5
5a553b1c9a9dd4a03331d9b33951adad

SHA1
c26e3652ef52539924d873631295a0bd74f4791f

SHA256
9dd7c4d245afd85ca1fbaf786d629e1a941616c6f6fb8cb55300d3fa5cacdb79

SHA512
f02709fb20e4646e8b7342983d3ba9428f824cde84d9223d55be300d74e8a2d60388ee603eb25e52f92a412e0467d6cc9ff603f3b506afb1fb286e391d82a567

Download Submit
C:\Windows\Temp\z.exe

Filesize
19KB

MD5
5a553b1c9a9dd4a03331d9b33951adad

SHA1
c26e3652ef52539924d873631295a0bd74f4791f

SHA256
9dd7c4d245afd85ca1fbaf786d629e1a941616c6f6fb8cb55300d3fa5cacdb79

SHA512
f02709fb20e4646e8b7342983d3ba9428f824cde84d9223d55be300d74e8a2d60388ee603eb25e52f92a412e0467d6cc9ff603f3b506afb1fb286e391d82a567

Download Submit
\Windows\Temp\z.exe

Filesize
19KB

MD5
5a553b1c9a9dd4a03331d9b33951adad

SHA1
c26e3652ef52539924d873631295a0bd74f4791f

SHA256
9dd7c4d245afd85ca1fbaf786d629e1a941616c6f6fb8cb55300d3fa5cacdb79

SHA512
f02709fb20e4646e8b7342983d3ba9428f824cde84d9223d55be300d74e8a2d60388ee603eb25e52f92a412e0467d6cc9ff603f3b506afb1fb286e391d82a567

Download Submit
memory/1072-65-0x0000000140000000-0x00000001405E8000-memory.dmp

Filesize
5.9MB

Download
memory/1408-54-0x00000000750A1000-0x00000000750A3000-memory.dmp

Filesize
8KB

Download
memory/1408-55-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download
memory/1408-69-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download