nymaim | 7a57b4ffa3a93adcc50c41b08409763c33e292143c0775e8c525957e41c4706c

Analysis

max time kernel
100s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
26/09/2022, 03:53

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
file.exe
Size 239KB
Sample220926-efmj1shce3
SHA256 7a57b4ffa3a93adcc50c41b08409763c33e292143c0775e8c525957e41c4706c
MD5 a314267102e34f113beebd63d54d4d9b
SHA1 90729893843eb2a3d92b78a6691a445cfca6c920
SHA512 a14cc4790ebe8e9bb51f726cefa62e3a4024f118b9371ef8d498113b0cd077dccffeed8566631e124d3b816ef6bcf9004ba76c67b0bd28ddf0e54b5b9ad3b3c2
SSDEEP 3072:+Kq0G5avU+CfCV6nG97tfdl4yqKkk1HNsdm3ekOupGtctiCmvPvUwgMB5W+5x:jU+Cfq997z5B1HNA01FrmvPsw2
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

208.67.104.97
85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
1576	Cleaner.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	file.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 12 IoCs

pid	pid_target	Process	procid_target
4940	2796	WerFault.exe	81
404	2796	WerFault.exe	81
5036	2796	WerFault.exe	81
2972	2796	WerFault.exe	81
4856	2796	WerFault.exe	81
224	2796	WerFault.exe	81
2624	2796	WerFault.exe	81
5016	2796	WerFault.exe	81
4584	2796	WerFault.exe	81
2696	2796	WerFault.exe	81
4952	2796	WerFault.exe	81
5100	2796	WerFault.exe	81

Kills process with taskkill 1 IoCs

evasion

pid	Process
4032	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2796	file.exe
2796	file.exe
2796	file.exe
2796	file.exe
2796	file.exe
2796	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2796	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1576	Cleaner.exe
Token: SeDebugPrivilege	4032	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2796 wrote to memory of 1412	2796	file.exe	106
PID 2796 wrote to memory of 1412	2796	file.exe	106
PID 2796 wrote to memory of 1412	2796	file.exe	106
PID 1412 wrote to memory of 1576	1412	cmd.exe	108
PID 1412 wrote to memory of 1576	1412	cmd.exe	108
PID 2796 wrote to memory of 5060	2796	file.exe	117
PID 2796 wrote to memory of 5060	2796	file.exe	117
PID 2796 wrote to memory of 5060	2796	file.exe	117
PID 5060 wrote to memory of 4032	5060	cmd.exe	120
PID 5060 wrote to memory of 4032	5060	cmd.exe	120
PID 5060 wrote to memory of 4032	5060	cmd.exe	120

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2796
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 452
  2⤵
  - Program crash
  PID:4940
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 764
  2⤵
  - Program crash
  PID:404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 784
  2⤵
  - Program crash
  PID:5036
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 784
  2⤵
  - Program crash
  PID:2972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 844
  2⤵
  - Program crash
  PID:4856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 904
  2⤵
  - Program crash
  PID:224
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 908
  2⤵
  - Program crash
  PID:2624
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 1148
  2⤵
  - Program crash
  PID:5016
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 1396
  2⤵
  - Program crash
  PID:4584
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\AGNOCbBOBE\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1412
- - C:\Users\Admin\AppData\Local\Temp\AGNOCbBOBE\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\AGNOCbBOBE\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1576
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 1396
  2⤵
  - Program crash
  PID:2696
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 1408
  2⤵
  - Program crash
  PID:4952
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5060
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4032
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 492
  2⤵
  - Program crash
  PID:5100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2796 -ip 2796
1⤵
PID:2828

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2796 -ip 2796
1⤵
PID:5060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 2796 -ip 2796
1⤵
PID:640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 2796 -ip 2796
1⤵
PID:884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 2796 -ip 2796
1⤵
PID:2148

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 2796 -ip 2796
1⤵
PID:316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2796 -ip 2796
1⤵
PID:432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 2796 -ip 2796
1⤵
PID:3788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2796 -ip 2796
1⤵
PID:4860

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2796 -ip 2796
1⤵
PID:1328

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2796 -ip 2796
1⤵
PID:4848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 592 -p 2796 -ip 2796
1⤵
PID:1772

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

Bunifu_UI_v1.5.3.dll

Path C:\Users\Admin\AppData\Local\Temp\AGNOCbBOBE\Bunifu_UI_v1.5.3.dll
Size 236KB
SHA256 f1b3e0f2750a9103e46a6a4a34f1cf9d17779725f98042cc2475ec66484801cf
MD5 2ecb51ab00c5f340380ecf849291dbcf
SHA1 1a4dffbce2a4ce65495ed79eab42a4da3b660931
SHA512 e241a48eafcaf99187035f0870d24d74ae97fe84aaadd2591cceea9f64b8223d77cfb17a038a58eadd3b822c5201a6f7494f26eea6f77d95f77f6c668d088e6b
SSDEEP 6144:SIQpxILDXGGMO7Ice9C5kQw2hWHcHTykhb:SIQpxILDXGGlET9n/cHG
MD5 SHA1 SHA512 SSDEEP

Submit Download

Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\AGNOCbBOBE\Cleaner.exe
Size 3.8MB
SHA256 301d9c55653f6cd8211aafdaf130092cb7ef8ea2e54db2db97153c1c8abf272c
MD5 23c1e8f48ec06960bbd9969c1f404192
SHA1 b9384151eb3f2dbd095fa273c248722e1cc74ea3
SHA512 f572e3a0ad58b3a1ed22db00b05a3909f7f53f70b84ab736e2dd6ddc54d8781fcffe4a9b33b0dd2836d438a1982b944426fe4ed01bd866bd77e20046220f2b5b
SSDEEP 49152:W/PD/DL/D9CuZrr2h60qPAnDfvl/DK1zAb2ibtbelHi2btsTBrfwWXRxL56ZD0Mp:W3D///UUrPmfvVDWASmXnMn
MD5 SHA1 SHA512 SSDEEP

Submit Download

Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\AGNOCbBOBE\Cleaner.exe
Size 3.8MB
SHA256 301d9c55653f6cd8211aafdaf130092cb7ef8ea2e54db2db97153c1c8abf272c
MD5 23c1e8f48ec06960bbd9969c1f404192
SHA1 b9384151eb3f2dbd095fa273c248722e1cc74ea3
SHA512 f572e3a0ad58b3a1ed22db00b05a3909f7f53f70b84ab736e2dd6ddc54d8781fcffe4a9b33b0dd2836d438a1982b944426fe4ed01bd866bd77e20046220f2b5b
SSDEEP 49152:W/PD/DL/D9CuZrr2h60qPAnDfvl/DK1zAb2ibtbelHi2btsTBrfwWXRxL56ZD0Mp:W3D///UUrPmfvVDWASmXnMn
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1576-141-0x000001DC5B510000-0x000001DC5B552000-memory.dmp

Download

memory/1576-145-0x00007FFAA2490000-0x00007FFAA2F51000-memory.dmp

Download

memory/1576-139-0x000001DC597F0000-0x000001DC59970000-memory.dmp

Download

memory/1576-142-0x00007FFAA2490000-0x00007FFAA2F51000-memory.dmp

Download

memory/2796-143-0x0000000000629000-0x000000000064F000-memory.dmp

Download

memory/2796-133-0x0000000002190000-0x00000000021CF000-memory.dmp

Download

memory/2796-132-0x0000000000629000-0x000000000064F000-memory.dmp

Download

memory/2796-144-0x0000000000400000-0x0000000000596000-memory.dmp

Download

memory/2796-134-0x0000000000400000-0x0000000000596000-memory.dmp

Download

memory/2796-146-0x0000000010000000-0x000000001001B000-memory.dmp

Download

memory/2796-152-0x0000000000629000-0x000000000064F000-memory.dmp

Download

memory/2796-153-0x0000000000400000-0x0000000000596000-memory.dmp

Download