nymaim | 8319d37661855ed727fe99fb78a988300b4938e60f4003239ddadf910f4d0da3

General

Target

file.exe
Size

359KB
MD5

b850cae79bd87b5fa5f3762fea7ac52b
SHA1

4718c0c9f033471e21ea04e43cd0759761e21224
SHA256

8319d37661855ed727fe99fb78a988300b4938e60f4003239ddadf910f4d0da3
SHA512

ab27670ae2ac1c7bb72fef1ad4d776b41714c10661478839d878d19f8ad35556769c30d1d82f92f7bcc4e52a6fc8c912acf5ea0f12a3486efe71573194311de4
SSDEEP

6144:lRTH+eLVVvJyJ5ysGNQm1sQw+z+xaYW3z5LYuzbgwuQR2QrZwVfUPk:vTXB/yJ5U1sl+2aYa5cunn2QTc

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

C2

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
1128	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 11 IoCs

pid	pid_target	Process	procid_target
1436	5008	WerFault.exe	83
3276	5008	WerFault.exe	83
316	5008	WerFault.exe	83
3524	5008	WerFault.exe	83
2044	5008	WerFault.exe	83
3740	5008	WerFault.exe	83
3856	5008	WerFault.exe	83
2384	5008	WerFault.exe	83
1820	5008	WerFault.exe	83
3248	5008	WerFault.exe	83
5056	5008	WerFault.exe	83

Kills process with taskkill 1 IoCs

evasion

pid	Process
2232	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5008	file.exe
5008	file.exe
5008	file.exe
5008	file.exe
5008	file.exe
5008	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
5008	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1128	Cleaner.exe
Token: SeDebugPrivilege	2232	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 5008 wrote to memory of 1784	5008	file.exe	106
PID 5008 wrote to memory of 1784	5008	file.exe	106
PID 5008 wrote to memory of 1784	5008	file.exe	106
PID 1784 wrote to memory of 1128	1784	cmd.exe	108
PID 1784 wrote to memory of 1128	1784	cmd.exe	108
PID 5008 wrote to memory of 4360	5008	file.exe	119
PID 5008 wrote to memory of 4360	5008	file.exe	119
PID 5008 wrote to memory of 4360	5008	file.exe	119
PID 4360 wrote to memory of 2232	4360	cmd.exe	121
PID 4360 wrote to memory of 2232	4360	cmd.exe	121
PID 4360 wrote to memory of 2232	4360	cmd.exe	121

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:5008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5008 -s 460
  2⤵
  - Program crash
  PID:1436
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5008 -s 488
  2⤵
  - Program crash
  PID:3276
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5008 -s 772
  2⤵
  - Program crash
  PID:316
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5008 -s 772
  2⤵
  - Program crash
  PID:3524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5008 -s 836
  2⤵
  - Program crash
  PID:2044
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5008 -s 776
  2⤵
  - Program crash
  PID:3740
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5008 -s 980
  2⤵
  - Program crash
  PID:3856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5008 -s 1020
  2⤵
  - Program crash
  PID:2384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5008 -s 1388
  2⤵
  - Program crash
  PID:1820
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\vAyOBidZbECGYA\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1784
- - C:\Users\Admin\AppData\Local\Temp\vAyOBidZbECGYA\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\vAyOBidZbECGYA\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1128
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5008 -s 1388
  2⤵
  - Program crash
  PID:3248
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5008 -s 1660
  2⤵
  - Program crash
  PID:5056
- 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:4360
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 5008 -ip 5008
1⤵
PID:3444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 5008 -ip 5008
1⤵
PID:1060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 5008 -ip 5008
1⤵
PID:32

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 5008 -ip 5008
1⤵
PID:224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 5008 -ip 5008
1⤵
PID:3300

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 5008 -ip 5008
1⤵
PID:4596

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 5008 -ip 5008
1⤵
PID:3852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 5008 -ip 5008
1⤵
PID:3704

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 5008 -ip 5008
1⤵
PID:4064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 5008 -ip 5008
1⤵
PID:4052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 5008 -ip 5008
1⤵
PID:2656

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

1

T1102

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\vAyOBidZbECGYA\Bunifu_UI_v1.5.3.dll

Filesize
236KB

MD5
2ecb51ab00c5f340380ecf849291dbcf

SHA1
1a4dffbce2a4ce65495ed79eab42a4da3b660931

SHA256
f1b3e0f2750a9103e46a6a4a34f1cf9d17779725f98042cc2475ec66484801cf

SHA512
e241a48eafcaf99187035f0870d24d74ae97fe84aaadd2591cceea9f64b8223d77cfb17a038a58eadd3b822c5201a6f7494f26eea6f77d95f77f6c668d088e6b

Download Submit
C:\Users\Admin\AppData\Local\Temp\vAyOBidZbECGYA\Cleaner.exe

Filesize
2.4MB

MD5
79754768767380ef36ef446c6a1709e4

SHA1
2af83a6e20d7efc3119d312534b3f3968d17776e

SHA256
cd6bb6fdf80bec69630a61707383e6430463751463635f35fce42eb97daa7060

SHA512
6f88e9e5f5309ff1e87666a8066333660db37f85031db6dbfb28460700a31d303e140f8dd5fe0e71f2de01706ac7e1317b8a6fd2d992a47bdaa3bb591965f461

Download Submit
C:\Users\Admin\AppData\Local\Temp\vAyOBidZbECGYA\Cleaner.exe

Filesize
2.4MB

MD5
79754768767380ef36ef446c6a1709e4

SHA1
2af83a6e20d7efc3119d312534b3f3968d17776e

SHA256
cd6bb6fdf80bec69630a61707383e6430463751463635f35fce42eb97daa7060

SHA512
6f88e9e5f5309ff1e87666a8066333660db37f85031db6dbfb28460700a31d303e140f8dd5fe0e71f2de01706ac7e1317b8a6fd2d992a47bdaa3bb591965f461

Download Submit
memory/1128-141-0x00000178E7FC0000-0x00000178E8002000-memory.dmp

Filesize
264KB

Download
memory/1128-139-0x00000178E7940000-0x00000178E7AB2000-memory.dmp

Filesize
1.4MB

Download
memory/1128-145-0x00007FFFCDF80000-0x00007FFFCEA41000-memory.dmp

Filesize
10.8MB

Download
memory/1128-144-0x00007FFFCDF80000-0x00007FFFCEA41000-memory.dmp

Filesize
10.8MB

Download
memory/5008-142-0x000000000065F000-0x0000000000685000-memory.dmp

Filesize
152KB

Download
memory/5008-143-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/5008-134-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/5008-146-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/5008-133-0x00000000005C0000-0x00000000005FF000-memory.dmp

Filesize
252KB

Download
memory/5008-151-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/5008-132-0x000000000065F000-0x0000000000685000-memory.dmp

Filesize
152KB

Download

Analysis

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