nymaim | 8d94bbdf7edaafac141e38144cd359a7079da0222f8d3c3b5de585ce31f3c684

General

Target

file.exe
Size

1.3MB
MD5

d39e26d541f4f311d0d0a32c05852443
SHA1

304c97424e7bde8c7441fe6d9192ab59b9f5cf68
SHA256

8d94bbdf7edaafac141e38144cd359a7079da0222f8d3c3b5de585ce31f3c684
SHA512

ff0a2ca723d996b4bba1d3e94612f6fd3406e041192cd7671396b071de1267d5c307327747eb014693561fa0dae125410f6c5bc8d75a9955baad4335dad60b05
SSDEEP

24576:g20hhVhqnmDqaUrw0esTKZpLXnnBmcud7VS1zyDtSDYf+kATuCqtn/:g2QV6HLzWZJ3nBek1zyDtOkATuCE/

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
2024	file.tmp
4244	NitFiles451.exe
540	4NkUcOGzPM6.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	NitFiles451.exe

Loads dropped DLL 1 IoCs

pid	Process
2024	file.tmp

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

Drops file in Program Files directory 17 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Nit Files\is-DRK7P.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-TPQD9.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Nit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-1IUNR.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-N2K0J.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-DFQ0T.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-GRTKE.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-DK0OP.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Nit Files\NitFiles451.exe	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-8PI89.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-4ANFM.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-NEIMB.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-4DJVS.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-8T83J.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-PHTNM.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-I3AUT.tmp	file.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
2628	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4244	NitFiles451.exe
4244	NitFiles451.exe
4244	NitFiles451.exe
4244	NitFiles451.exe
4244	NitFiles451.exe
4244	NitFiles451.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2628	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 2024	4616	file.exe	81
PID 4616 wrote to memory of 2024	4616	file.exe	81
PID 4616 wrote to memory of 2024	4616	file.exe	81
PID 2024 wrote to memory of 4244	2024	file.tmp	82
PID 2024 wrote to memory of 4244	2024	file.tmp	82
PID 2024 wrote to memory of 4244	2024	file.tmp	82
PID 4244 wrote to memory of 540	4244	NitFiles451.exe	83
PID 4244 wrote to memory of 540	4244	NitFiles451.exe	83
PID 4244 wrote to memory of 540	4244	NitFiles451.exe	83
PID 4244 wrote to memory of 2568	4244	NitFiles451.exe	85
PID 4244 wrote to memory of 2568	4244	NitFiles451.exe	85
PID 4244 wrote to memory of 2568	4244	NitFiles451.exe	85
PID 2568 wrote to memory of 2628	2568	cmd.exe	87
PID 2568 wrote to memory of 2628	2568	cmd.exe	87
PID 2568 wrote to memory of 2628	2568	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Users\Admin\AppData\Local\Temp\is-81HDD.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-81HDD.tmp\file.tmp" /SL5="$701F8,1133963,233984,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:2024
- - C:\Program Files (x86)\Nit Files\NitFiles451.exe
    "C:\Program Files (x86)\Nit Files\NitFiles451.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4244
  - - C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\4NkUcOGzPM6.exe
      4⤵
      Executes dropped EXE
      PID:540
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "NitFiles451.exe" /f & erase "C:\Program Files (x86)\Nit Files\NitFiles451.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2568
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "NitFiles451.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2628

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Nit Files\NitFiles451.exe

Filesize
1.9MB

MD5
07c8ececbdfb07577afe112d8b60e064

SHA1
7c3832bc1b43441b91bed89b3c5f5e76bb22f5fc

SHA256
ea1bc5d8598482fb383bfedaae1f96ba09f619c6a2ac64146d87163c2f0db302

SHA512
235a6cd23283bfe67d96475a672f263966eac81058784528e02406b44b3e294edea302141a324526a49965ab06a86613c90f71f2e1d640b3e1789fa420a20d85

Download Submit
C:\Program Files (x86)\Nit Files\NitFiles451.exe

Filesize
1.9MB

MD5
07c8ececbdfb07577afe112d8b60e064

SHA1
7c3832bc1b43441b91bed89b3c5f5e76bb22f5fc

SHA256
ea1bc5d8598482fb383bfedaae1f96ba09f619c6a2ac64146d87163c2f0db302

SHA512
235a6cd23283bfe67d96475a672f263966eac81058784528e02406b44b3e294edea302141a324526a49965ab06a86613c90f71f2e1d640b3e1789fa420a20d85

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-81HDD.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-81HDD.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-GLI7K.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\4NkUcOGzPM6.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\4NkUcOGzPM6.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/4244-151-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/4244-143-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/4244-142-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/4244-147-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4244-154-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/4616-132-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/4616-138-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/4616-155-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download

Analysis

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